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  • A balloon is partly inflated with 5.25 liters of helium at sea level - Question A balloon is partly inflated with 5.25 liters of helium at sea level where the atmospheric pressure is 1010 mbar. The balloon ascends to an altitude of 3.00 × 103 meters, where the pressure is 863 mbar. What is the volume of the helium in the balloon at the higher altitude? Assume that the temperature of the gas in the balloon does not change in the ascent. A container that is perfectly isolated(can't lose heat) contains 61,43 Question A container that is perfectly isolated(can't lose heat) contains 61,43 g of water and its temperature is 29,78 oC.We put in this water a block of vanadium solid that has a its temperature of 432,44oC and it weights 312,55g.After a while (at equilibrium),we can observe that we still have liquid water but that a part of the water has evaporated.a)what is the final temperature of this system in oC?b)what is the quantity in kJ that has been lost by the block of metal?c)what mass of water in g has evaporated?d)what mass of liquid water in g still remains in the container? The data is posted below. I need help determining the g/100mL calculations Question The data is posted below. I need help determining the g/100mL calculations based off the data below. I also need to determine the solubility at 80°C based off the above trend line. Any help on this lab is much appreciated. Thank you for your time.EXPERIMENT 2: Make a graph of the NH4Cl solubility in g/100 mL (y-axis) and temperature in °C (x-axis). Show the trend line, including your slope and intercept. Upload your graph here.EXPERIMENT 2: Use the NH4Cl solubility curve to calculate its solubility at 80.0 °C.Data:temperature at which the solubility is 4.0 g/10 mL (°C)25.9°Ctemperature at which the solubility is 4.5 g/10 mL (°C)36.2°Ctemperature at which the solubility is 5.0 g/10 mL (°C)47.1°Ctemperature at which the solubility is 6.0 g/10 mL (°C)66.4°C Hello tutor, I need help in chemistry. The questions are on the pictures. Question Hello tutor, I need help in chemistry. The questions are on the pictures. Can you the ones that are…

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  • 14. Calculate the PH of a 0.42 M NH4Cl solution. a. 5.62 b. 3.28 c. 4.82 d. 6.52 - Question Get Answer 14. Calculate the PH of a 0.42 M NH4Cl solution. a. 5.62 b. 3.28 c. 4.82 d. 6.52 15. Which one of the following salts will form a basic solution on dissolving in water?a. BaO b. NaCl c. LiBr d. SO316. Which one of the following combinations cannot be a buffer solution?a. HCN and KCN b. NH3 and (NH4)2SO4 c. HNO3 and NaNO3 d. HF and NaF e. HNO2 and NaNo217. Which of the the following statements is correct with respect to an acid?a. Strong acids have smaller Ka valuesb. Weaker acids have small Ka valuesc. The strength of an acid is inversely proportional to its Ka valuesd. Weaker acids have greater H concentration18. A titration of an acid and base to the equivalence point resulted in a noticeably acidic solution. It is likely the titration involveda. a strong acid and a weak base b. weak acid and a strong basec. a weak acid and a weak acid with Ka equal to Kb d. a strong acid and a strong base19. The pH of a 0.1 M benzoic acid solution (Ka = 6.5 x 10-5) is _____a. 3.6 b. 2.6 c. 2.0 d. 1.620. 0.056 g of CH3COOH (Ka =1.8 x 10-5) is dissolved in enough water to obtain 50.0 mL of solution. The concentration of H in the solution is _____a. 1.8 x 10-4 M b. 1.8 x 10-3 M C. 5.8 x 10-3 M d. 5.8 x 10-4 M21. A 0.040 M monoprotic acid solution is 14% ionized. Its Ka value is _____a. 9.1 x 10-4 b. 4.6 x 10-3 c. 2.3 x 10-6 d. 9.2 x 10-522. In a titration experiment 12.5 mL of 0.500 M H2SO4 neutralized 50 mL of NaOH. The concentration of NaOH solution is __________a. 0.500 M b. 0.250 M c. 0.125 M d. 0.0250 M23. The solubility product of silver chromate (Ag2CrO4) is given by _____a. [Ag ] [CrO42-] b. [Ag ]2 [CrO42-] c. [Ag ] [CrO42-]2 d. [CrO42-]/ [Ag ]24. The solubility product of manganese (II) phosphate, Mn3 (PO4)2 is given by ____a. [Mn2 ]2 [PO43-]3 b. [Mn2…

    14. Calculate the PH of a 0.42 M NH4Cl solution. a. 5.62 b. 3.28 c. 4.82 d. 6.52 Read More »

  • Hw problem A electron in a hydrogen atom drops from energy level n =5 to n =3 Chemistry Assignment Help - Question Hw problem A electron in a hydrogen atom drops from energy level n =5 to n =3 A) calculate the energy for this transition using the Rydberg equationB) Calculate the wavelength corresponding to this transitionC) Using an electromagnetic spectrum, identify the region in which this transition falls. 1. If an unknown serum solution has an absorbance of 0.244, what is its iron concentration in mol/L?b) The Question 1. If an unknown serum solution has an absorbance of 0.244, what is its iron concentration in mol/L?b) The derivative solution for the unknown was prepared by adding of 4.00 mL of serum solution with 16.00 mL of reactant solution to form the derivative solution. Using the answer to the previous question, how many mg of iron is present in 5.00 mL of blood serum? The molar mass of iron is 55.85 g/mol. - 2. a. A batch bioreactor running at 30°C was operated for the production Question 2. a. A batch bioreactor running at 30°C was operated for the production of alcohol from glucose. Table 2.1 gives the data of rate of glucose conversion (reaction rate) and the concentration of measured glucose in the reactor. The initial concentration of glucose, is 70 kg-mol/m' Table 2.1 : Concentration vs rate o consumption of glucose Concentration 68 54.6 33.0 20.0 12.2 7.4 4.5 2.7 (Cx Get Answer Lab #9: Determining the Enthalpy of a Chemical ReactionPurposeIn this experiment, You will use Calorimetry and Hess's Question Get Answer Lab #9: Determining the Enthalpy of a Chemical ReactionPurposeIn this experiment, You will use Calorimetry and Hess's Law to determine the Enthalpy of a reaction. You will explore two reactions used in real life in thermotherapy (hot 1. If an unknown serum solution has an absorbance of 0.244, what is its iron concentration in mol/L? Question 1. If an unknown serum solution has an absorbance of 0.244, what is its iron concentration in mol/L? b) The derivative solution for the unknown was prepared by adding of 4.00 mL of serum solution with 16.00 mL of reactant solution to form the derivative solution. Using the answer to…

    Hw problem A electron in a hydrogen atom drops from energy level n =5 to n =3 Chemistry Assignment Help Read More »

  • Given the following list of standard reduction potentials and reduction - Question Given the following list of standard reduction potentials and reduction half reactions, what is the Ecell value for the most spontaneous combustion?In3 (aq) 3e- -- 20wt % X solution with flowrate of 2000 kg/h is cooled down from 90oC to 6oC by using heat exchanger. Question 20wt % X solution with flowrate of 2000 kg/h is cooled down from 90oC to 6oC by using heat exchanger. To achieve this, 2700 kg/h of water liquid at temperature of 2oC is used as cooling medium. If thecooling water leaves the heat exchanger at 50 °C, determine the heat loss, Q from the X solution tothe surroundings. Assume the heat capacity, Cp for X component is 1.46 kJ/kg-°C. A) Calculate the pH of a solution that is: 3.3 × 10−4 M in HNO3. Question A) Calculate the pH of a solution that is: 3.3 × 10−4 M in HNO3. B) Calculate [H3O ] for a solution of nitric acid that is: pH = 5.20 ___×10___ MC) Calculate the pH of a 0.0014 M solution of KOH.D) Calculate the pH of a solution with a H3O concentration of:1.8 × 10−6 ME) What is the OH− concentration of a 1.2 × 10−11 MH3O solution? Give your answer in scientific notation. ____×10___MAn equation to represent the neutralization of an aqueous solution of HCl with an aqueous solution ofKOH. 1. What is the concentration of a NaOH solution made by dissolving Question 1. What is the concentration of a NaOH solution made by dissolving 3.55 moles of NaOH in water to a final volume of 945 mL?2. What is the volume, in mL, of a solution if it contains 24.5 moles of Cu2 and the concentration of Cu2 is 0.043 M?3. How many moles of HCl are needed to make a 13.3 mL solution at 35.0 mM?5. How many mL of 0.112 M silver nitrate are needed to react with 2.57 mg of Cu to make Cu (II) nitrate and silver? 6. How many mL of 1.2 M lead (II) nitrate is needed to react with an excess amount of KI to make 13.2 g of…

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  • Experiment 3: Spectrophotometric Determination of the Weight Percent Copper in a Penny Pre-lab Questions: - Question Experiment 3: Spectrophotometric Determination of the Weight Percent Copper in a Penny Pre-lab Questions: We are used to the idea that 'active' metals react with strong acids, but these reactions involve the oxidation of the metal by the H (aq) ion to form metal ions and hydrogen gas. M(s) H (aq)  M2 (aq) H2(g) However, this reaction happens only if the metal is above hydrogen in the activity series. Although Cu metal reacts vigorously with nitric acid, we know this cannot be the 'normal' metal-acid reaction shown above because 1.) copper is below hydrogen in the activity series, and 2.) the brown gas formed in the reaction is obviously not H2(g), which would be colorless. The unbalanced reaction of copper metal with nitric acid is given by: Cu(s) HNO3(aq)  Cu2 (aq) NO2(g) H2O(l) Note that, unlike the 'normal' oxidation reaction, the oxidation state of H does not change. 1. Balance the reaction of copper metal with nitric acid using the half-reaction method. Be sure to give the balanced half-reactions as well as the total balanced chemical equation. Which elements are changing oxidation states in this reaction? 2. Calculate the molar concentrations of the five standard copper nitrate solutions prepared as outlined in the experimental procedure for this lab if the stock solution is exactly 0.10 M Cu(NO3)2. (Remember, since ∙ = # moles, for dilution you can use the equation M1V1 = M2V2). 1.What is the mass of 3.15 liters of N2 gas at STP? (5 points) 2.86 grams Question 1.What is the mass of 3.15 liters of N2 gas at STP? (5 points) 2.86 grams 3.21 grams3.94 grams4.06 grams2.Which formula can be used to calculate the theoretical yield?Actual yield percent yieldAmount of reactants amount of products(Actual yield ÷ percent yield) × 100(Amount of reactant ÷ amount of product) × 1003.What happens to the particles of a solid when the solid changes into a gas? (5 points)They move faster.They slow down.They increase in size.They decrease in size. 1. How many lone pairs of electrons are on the central atom in TeF4? Question 1. How many lone pairs…

    Experiment 3: Spectrophotometric Determination of the Weight Percent Copper in a Penny Pre-lab Questions: Read More »

  • The water is in gaseous form at a volume of 5 L at 130⁰C and adiabatic - Question The water is in gaseous form at a volume of 5 L at 130⁰C and adiabatic expands up to 10 L volume at a constant pressure of 0.80 atm.Find the heat, work, internal energy, enthalpy and temperature change in this process assuming that 5 moles of gas. 7. A non-polar molecule whose electronic cloud has been distorted Question 7. A non-polar molecule whose electronic cloud has been distorted by proximity of a polar molecule is called ... a) induced dipole b) allotropic c) dipole d) ion-dipole 8. Which of the compounds below contains three pairs of bonding electrons and one pair? of free electrons. a) CH4 b) H2O c) PCl3 d) HF 9. Which of the molecules below is angular in shape? a) SF2 b) SiCl4 c) PH3 d) NCl3 10. If an unknown substance has a melting point of 1850 oC, a vaporization point 2,700 oC, is insoluble in water and is a good electrical insulator, it is probably a... a) Polar molecular solid b) Solid covalent network c) Metallic solid d) Ionic solid 11. Which of the series below provides the ascending order of vaporization temperatures of the substances listed? a) NaCl, H2O, Cl2 and C b) Cl2, NaCl, H2O and C c) C, NaCl, H2O and Cl2 d) Cl2, H2O, NaCl and C 12. To build a solid and resistant tool, you want to maximize its hardness. Here is the order decreasing metals to be used according to their hardness. a) Al, Ca, Li and Cs b) Ca, Al, Cs and Li c) Cs, Li, Al and Al d) Cs, Li, Ca and Al 15. Explain how you determine and write the complete electronic configuration Question 15. Explain how you determine and write the complete electronic configuration of nitrogen (Z = 7). In your answer, highlight the following concepts and principles i. The configuration written by layers and sub-layers (1s2 2s2...) ii. The use of quantum dots iii. The Pauli exclusion principle iv. Hund's rule v. Aufbau's principle vi. Quantum numbers for each of the seven electrons 16. Determines the structures of the following molecules: NH4…

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  • For the salt water solutions, assume that the rate of freezing is - Question For the salt water solutions, assume that the rate of freezing is related to the freezing point of the solution so that the time required for freezing helps identify the freezing point of each aqueous solution including water itself. what does this tell us about the affect that addition of salt had on the freezing point of the water solutions?from observations on the affect of addition of salt to freezing point, how is this related to the addition of salt to highways in the north during the winter? Although SiO2 and SiF4 have similar basic structural forms, SiO2 melts Question Although SiO2 and SiF4 have similar basic structural forms, SiO2 melts at 1710 ° C and SiF4 melts at -90 ° C. Explain where this difference originated?(as shown in the figure on the right side, both structures are tetrahedra) with Si atom in the middle and O or F atoms in their corners) 250 ml of seawater is found to have 5.40 g of NaCl dissolved in it. What is the concentration of NaCl in mol/L? Question 250 ml of seawater is found to have 5.40 g of NaCl dissolved in it. What is the concentration of NaCl in mol/L? Be sure to give your answer to three significant figures, and do not enter the units in the box. (Useful data: Atomic masses: Na = 22.99, Cl = 35.45) What is the total number of atoms (not molecules) present in 0.36 mol of H2O? Question What is the total number of atoms (not molecules) present in 0.36 mol of H2O? (Give your answer to at least 2 significant figures using 'exponential' format, .e.g. 1200000 = 1.2x106 would be typed as 1.2E 06)I have worked out 18.02g/mol, therefore 0.36 mols equal 6.487g of H2O. however i do not understand what it means by working out how many atoms??? Calculate the number of oranges per year that can be processed with Question Calculate the number of oranges per year that can be processed with this process if it is run 8 hours a day and 360 days a year. Ignore changes…

    For the salt water solutions, assume that the rate of freezing is Read More »

  • We will begin this topic by practicing the use of the scientific method. - Question We will begin this topic by practicing the use of the scientific method. The steps of the scientific method are: observation, hypothesis, experiment, results, and theory. Using your understanding of the scientific method from your readings and lessons, you will be applying this knowledge to a real world situation. Take a real world scenario in the news, or another outside source and apply the scientific method, being sure to detail the controls on your experiment. Describe a result that would confirm your hypothesis.I just need a real life scientific method: observation, hypothesis, experiment, and theory soap consist of compounds such as sodium stearate, CH3(CH2)16COO- Na , Question soap consist of compounds such as sodium stearate, CH3(CH2)16COO- Na , that have both hydrophobic and hydrophilic parts. Consider the hydrocarbon part of sodium stearate to be the "tail" and the charged part to be the "head."1) write Which part of sodium stearate (soap), head or tail, is more likely to be solvated by water and what intermolecular interaction would you expect between soap and water?2) Grease is a complex mixture of mostly hydrophobic compounds. Which part of sodium stearate, head or tail, is most likely to bind to grease and what type of intermolecular interactions would you expect between soap and grease?3) why observed van't Hoff factor for soap dissolved in water is less than 2. Determine what effect the following errors would have on your final result of molar mass. Question Get Answer Determine what effect the following errors would have on your final result of molar mass. 1. If the mass of the flask is measured after the liquid has been vaporized, but before the outside of the flask is dried.a. The error you made above, not drying the flask, will cause your mass measurement to be ____________?a. Highb. Lowc. Unaffectedd. Either high or lowb. Write out the ideal gas law and solve it for molar mass.c. Examining the equation for molar mass and your determination of the error to your mass in part a, this will cause the molar mass to be _________ ?a. highb. lowc. Unaffectedd. Either…

    We will begin this topic by practicing the use of the scientific method. Read More »

  • From your knowledge of chemistry determine whether the following statements are true or false. Chemistry Assignment Help - Question From your knowledge of chemistry determine whether the following statements are true or false. 1. When NH4Cl dissolved in water the temperature went down. This is because heat left the system. Therefore, the heat of solution of NH4Cl is exothermic. ____ T ____ F 2. When NH4Cl dissolved in water the temperature went down. This is because heat went from the surroundings to the system. Therefore, the heat of solution of NH4Cl is endothermic. ____ T ____ F Based on the data you collected in this experiment, determine whether each of the following statements is true, false, or cannot be determined from these data. 1. For the dissolving of NH4Cl in water, the lattice energy is greater than the hydration energy. 2. For the dissolving of CaCl2 in water, the lattice energy is greater than the hydration energy. 3. The lattice energy of NH4Cl is greater than that of CaCl2 4. Water and solid CaCl2 have a lower potential energy than a CaCl2 solution. 5. Water and solid NH4Cl have a lower potential energy than a NH4Cl solution. Refer to the structures of the molecules given above to help answer these questions: 1. What is the strongest intermolecular force... a) between hexane molecules? b) between heptane molecules? c) between hexane and heptane molecules? 2. Do you predict that the heat of solution for the mixing of hexane and heptane is negative, nearly zero or positive? Explain. 3. Does your prediction of the heat of solution for hexane and heptane agree with your experimental results? Explain. 4. What is the strongest intermolecular force... a) between isopropanol molecules? b) between hexane molecules? c) between isopropanol and hexane molecules? 5. Do you predict that the heat of solution for the mixing of isopropanol and hexane is negative, nearly zero or positive? Explain. 6. Does your prediction of the heat of solution for isopropanol and hexane agree with your experimental results? Explain. 7. What is the strongest intermolecular force... a) between acetone molecules? b) between water molecules? c) between acetone and water molecules? 8. Do you predict that the heat of solution for…

    From your knowledge of chemistry determine whether the following statements are true or false. Chemistry Assignment Help Read More »

  • Calculate the mass in grams for each of the following A. 1.55×1024 atoms of neon, Ne - Question Calculate the mass in grams for each of the following A. 1.55×1024 atoms of neon, Ne Express your answer to three significant figures and include the appropriate units.B. 6.05×1022 molecules of dinitrogen trioxide, N2O3Express your answer to three significant figures and include the appropriate unitsC. 4.47×1021 formula units of magnesium perchlorate, Mg(ClO4)2Express your answer to three significant figures and include the appropriate units. 1) Solid lithium hydroxide is used in space vehicles to remove exhaled Question 1) Solid lithium hydroxide is used in space vehicles to remove exhaled carbon dioxide from the living environment by forming solid lithium carbonate and liquid water. 2 LiOH(s) CO2(g) -- Methanol (CH3OH) burns according to the equation: 2CH3OH(l) 3O2(g) ---- Question Methanol (CH3OH) burns according to the equation: 2CH3OH(l) 3O2(g) ---- QUESTİON: water is in gaseous state at a volume of 5 L at 130 ° C Question QUESTİON: water is in gaseous state at a volume of 5 L at 130 ° C and adiabatic expands up to 10 L volume at a constant pressure of 0.80 atm.find the heat, work, internal energy, enthalpy and temperature change in this process assuming 5 moles of gas. It is known that the number of gas molecules with a certain kinetic Question It is known that the number of gas molecules with a certain kinetic energy is proportional to the expression exponentially containing the term kT kinetic energy. The ratio of gas particles whose speed is between Cx and Cx dcx in the direction of X-axis to the total number of gas particles, the size of N dN / N;It is given in relation. Calculate the A proportion coefficient in this relation. The exhaust gas from an average car contains 206 ppm of the pollutant Question Get Answer The exhaust gas from an average car contains 206 ppm of the pollutant nitrogen oxide, NO. If a car emits 0.125 m3 of exhaust gas at 1.00 x 105 Pa and exactly 350 K, calculate the mass of NO that has been added to the atmosphere? Methylamine is a weak base that is found in rotting fish…

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  • Here is the relevant information for the questions Project 2: Mass Percent of M - Question Get Answer Here is the relevant information for the questions Project 2: Mass Percent of M 1. Which of the following scenarios would be optimal for obtaining Question Get Answer 1. Which of the following scenarios would be optimal for obtaining a date from radioactive decay using these isotopes: 87Rb, 147Sm, 235U, 238U, 40K, or 14C? There may be more than one answer that is appropriate. Explain your reasoning for why the remaining scenario(s) would be inappropriate/impossible to use that particular isotope. Answers should include a discussion on usable ages for each system and whether the necessary isotopes would be found in the material to be dated.a. A meteorite that formed early in the formation of the solar system. b. A rock formed through a mountain building event around 420 million years ago.c. Volcanic ash from an eruption 60 million years ago.d. An earthquake scarp that formed along the San Andreas Fault 50 years ago.e. An Incan archaeological dig site in the highlands of Peru.f. A tree from a forest in England that is suspected to be the oldest in the British Isles. CAN I GET HELP APPROACHING THE FOLLOWING 4 PROBLEMS. THANK YOU VERY MUCH: Question CAN I GET HELP APPROACHING THE FOLLOWING 4 PROBLEMS. THANK YOU VERY MUCH: 1) When 12.8 g of Zn metal is treated with a solution of 36 mL of hydrochloric acid (density = 1.096 g/mL), the zinc metal dissolves, giving a solution and releasing hydrogen gas. The solution weights 51.87 g. How many liters of hydrogen gas are released? The density of the gas is 0.090 g/L. 2) On a trip to Colorado you travel 1500 miles in 18 hours. During the trip you use 27 gallons of gasoline. (1 mile = 1.6093 km) (1 gallon = 3.79L)(6 points)Calculate the average speed in miles per hourCalculate the average speed in kilometers per hourCalculate the gas mileage in kilometers per liter.3) A salt, sodium chloride, reacts with the magnesium hydroxide to form sodium hydroxide and magnesium chloride. What can be a balanced equation for the reaction. 4) An element has 3 naturally occurring…

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  • Match the following with the definitions a. A state in which opposing forces or processes are balanced - Question Get Answer Match the following with the definitions a. A state in which opposing forces or processes are balanced b. This reaction proceeds at a faster rate when thermal energy is removed from a systemc. expression indicating that product formation is favoredd. a rule that states if a chemical system at equilibrium is disturbed, the system will undergo a shift. e. expression indicating approximately the same reactant and product formationf. this reaction proceeds at a faster rate when thermal energy is added to a systemg. the general form of an equilibrium reactionh. another name for law of mass action1.Equilibrium2.Closed system3.law of chemical equilibrium4.Keq > 15.Keq < 16.Keq = 17.aA bB (double arrow) cC dD8.Exothermic reaction9.Endothermic reaction10.Le Chaterlier's principle Get Answer Suppose before you titrated the sulfuric acid solution above, you first had to standardize your potassium Question Get Answer Suppose before you titrated the sulfuric acid solution above, you first had to standardize your potassium hydroxide solution with a solution of KHP. You titrated 10.00 mL of your above potassium hydroxide solution with 25.00 mL of your KHP solution. What is the concentration of your KHP solution and how many grams of KHP reacted? The molar mass of KHP is 204.22 g/mol. The reaction has a one-to-one mole ratio between KHP and potassium hydroxide. show your work Volume of potassium hydroxide used to reach the end point (mL): _____14.52ml________________ Moles of potassium hydroxide used to titrate: _________0.001940 moles________________ Moles of acid titrated: ______0.00097 moles______________________ Concentration of sulfuric acid (M): ______0.097 M_____________ Moles of potassium hydroxide titrated: _________________________________ Moles of KHP used to titrate: _____________________________ Concentration of KHP (M): _____________________________ Mass of KHP reacted (g): _________________________________ Get Answer https://www.bing.com/videos/searchq=adlc videos chemistry Question Get Answer https://www.bing.com/videos/searchq=adlc videos chemistry Hydrogen gas is collected over water at 19 °C (PH2O = 16.5 mm Hg). Question Hydrogen gas is collected over water at 19 °C (PH2O = 16.5 mm Hg). The total gas volume is measured at 16.1 mL and the atmospheric pressure is 726.8 mm Hg. See also the diagram below. What is the partial pressure of hydrogen collected in mm Hg?The density…

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  • 1.Compounds that have the same molecular formula but different arrangements of atoms are called - Question 1.Compounds that have the same molecular formula but different arrangements of atoms are called ___________________.A:IsotopesB:IsomersC.IndicatorsD.Isozymes2.The IUPAC name of the following compound is ________________________. CH3| I CH3-C-CH2-CH3 | CH3A.2,2-dimethylbutaneB.2-dimethylpentaneC.3,3,-dimethylbutaneD.2,2-dimethylhexane3.lkene is a carbon compound that contains a carbon-carbon _____ bond.A.single B.doubleC.tripleD.none of the above4.Ammonium hydroxide is a weak base becasue _________________________.A.It is a dilute solution.B.It is only slightly soluble in water.C.It is partially dissociates in water.D.It is completely ionized in aqueous solution.5.Which one of the following is characteristic of an acid ?A.Produces H3O (H ) in water.B.has aslippery, soapy touch C.produces OH - in water.D.B and C6.According to the Bronsted-Lowry definition a base is a __________________.A.proton donar.B.proton acceptor.C.solvent.D.substance that produces OH- in water.7.Identify the Bronsted-Lowry base in the following reaction: H2O CO32- → HCO-3 OH -A.H2O B.CO32-C.HCO-3D.OH-8.The name of Cu(OH)2 is ________________.A.Monocopper dihydroxideB.Copper (I) hydroxideC.Copper (II) hydroxideD.Copper hydroxide9.What is the [OH-] in a solution that has a [H3O ] = 1.0 x 10-6 M?A.1.0 x 10-2 MB.1.0 x 10-6 MC.1.0 x 10-8 MD.1.0 x 10-12 M10.An acid and base react to form a salt and water in a(n) _____________reaction.A.IonizationB.NeutralizationC.oxidationD.Reduction Polychlorinated biphenyls (pcbs) are compounds that were once used as insulators in electrical transmission lines and in the production Question Polychlorinated biphenyls (pcbs) are compounds that were once used as insulators in electrical transmission lines and in the production of polymers. Each pcb differs by the quantity and location of the chlorine atoms. An example of one of the many different pcbs is shown to the right. pcb production was halted in 1977 due to their potential toxicity, but the chemicals are still found in the environment due to their stability. Studies in remote areas of Alaska have shown that pcbs can even be found in lakes untouched by humans. There is no known natural process that produces pcbs, so all of the pcbs in existence are presumed to have been produced by humans. What scientific observation about pcb distribution is described above? Before 24 hours First trial Mass CaCl2 : 2.0g K2CO3 : Question Before 24 hours First trial Mass CaCl2 : 2.0g K2CO3 : 2.5 g Filter Paper 2.0g Watch…

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  • An antibiotic powder is reconstituted by adding 85 mL of water to the bottle to produce a final - Question An antibiotic powder is reconstituted by adding 85 mL of water to the bottle to produce a final volume of 100 mL. If the bottle contains 600 mg of antibiotic per 5 mL dose following reconstitution, what is the displacement volume of the antibiotic powder in mL/g? Give your answer to 2 decimal places. Disastrous explosions have resulted from the unsafe storage and handling Question Disastrous explosions have resulted from the unsafe storage and handling of the fertilizer, ammonium nitrate, which can decompose rapidly according to the following unbalanced chemical equation.__ NH4NO3(g) → __ N2(g) __ H2O(g) __ O2(g)If 49.6 L of water vapour is produced, the volume of oxygen gas produced at the same temperature and pressure is __________ L. In an experiment to remove lead from a sample of water, a student Question Get Answer In an experiment to remove lead from a sample of water, a student added potassium iodide to a solution of lead nitrate and obtained a precipitate of PbI2. At the end of the reaction, the student isolated 0.525 grams of PbI2. The theoretical yield was 0.632 grams. Use the following equation to calculate the percent yield. I. Determination of the Density of a Known Solid (Cu or Zn) Question I. Determination of the Density of a Known Solid (Cu or Zn) Metal Used = CuVolume Reading (mL) Mass of Metal Shots (g) Cumulative Volume of Metal Shots (cm3) Cumulative Mass of Metal Shots (g)Volume Reading (mL) 25.0 - 0.0 0.0 28.0 21.433 3.0 21.443 31.0 21.907 6.0 43.350 33.1 21.119 8.1 64.469 36.2 21.542 11.2 86.011 39.0 21.834 14 106.845 Literature Values: Density of Cu (Ref 1.) = 8.93 g/cm3 Density of Zn (Ref 1.) = 7.13 g/cm3 References for the literature values: Professor FoerstorGive the coordinates of the two points used to calculate the slope of your metal shots. ( ) ( ) The slope of the metal shot is Volume Reading (mL) Mass of Pennies (g) Cumulative Volume of Pennies (cm3 ) Cumulative Mass of Pennies (g) 25.0 0.0000 0.0 0.0 26.8 22.861 1.8 22.861 28.7 20.392 3.7 43.253 31.2…

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  • 1) Use these atomic (isotopic) notations to identify the number of each subatomic particle in these atoms. Chemistry Assignment Help - Question 1) Use these atomic (isotopic) notations to identify the number of each subatomic particle in these atoms. 2) Identify the 2 atoms above that are considered isotopes of each other and explain (using the definition of isotopes) what makes them the same and what makes them different. Questions 1.) select wich is relative Increasing the temperture qThermodynamicsUnit of Energy-q1st Law of Thermodynamics total ammount of energy Question Questions 1.) select wich is relative Increasing the temperture qThermodynamicsUnit of Energy-q1st Law of Thermodynamics total ammount of energy in an isoalted system does not change qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Energy Cannot be Created or Destroyed qThermodynamicsUnit of Energy-q1st Law of Thermodynamics boiling qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Calorie qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Study of Heat and Energy qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Joule qThermodynamicsUnit of Energy-q1st Law of Thermodynamics decreasing the temperture- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics condensation- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics energy is released- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics freezing- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Energy can change forces from one type to another- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics Energy is absorbed- qThermodynamicsUnit of Energy-q1st Law of Thermodynamics melting qThermodynamicsUnit of Energy-q1st Law of Thermodynamics2)A burning match releases 892.9 J of energy. Convert the energy released by 20 matches to the following energy units:Kilojoules.....................................? Calories.......................................? Food Calories.....................................? calories........................................? kcal...............................................?3) the following reaction is Endothermic or Exothermic.Heat flows from the reaction to the surrounds Hrxn Feels Cold Energetically Favorable Heat flows from surrounds to Reaction Not Energetiaclly Favorable Absorbs Energy Feels Hot -Hrxn Releases Energy4)Which of the following units are used to measure heat? Select all that apply. Kelvin°Fahrenheitkilocalories°CelsiuscaloriesJoules5) Estimate the enthalpy change (ΔHrxn) of the following reaction for 6 moles of Cl2 using the bond energies above. result in KJCH4 (g) 3Cl2 (g) --> CHCl3 (g) 3HCl (g) Assume the reaction 2 O3(g) Question Assume the reaction 2 O3(g) 1. The formula of chloric acid is HClO3. a) true b) false 2. Bases react with active metals to produce hydrogen 1. The formula of chloric acid is HClO3.…

    1) Use these atomic (isotopic) notations to identify the number of each subatomic particle in these atoms. Chemistry Assignment Help Read More »

  • 1) A 0.0800 M solution of a base, B, is 26.0% ionized. Calculate the - Question 1) A 0.0800 M solution of a base, B, is 26.0% ionized. Calculate the value of the base ionization constant, Kb.Place your answer in the box. Express your answer using only a number or numbers without text. Report your result in scientific notation and to the proper number of significant figures. Use the following format to express a number in scientific notation: 1.23E4 (or 1.23E-4 if the exponent is negative). Note that there are no spaces within the expression. All numbers are measured.2)Which of the following acids is a strong electrolyte?a) HBrb) HClc) HFd) H2CO3e) more than one correct response3)What is the correctly balanced chemical equation for the neutralization reaction between HClO4 (perchloric acid) and LiOH (lithium hydroxide)?a) 2 HClO4 LiOH For the following orbitals, state the values of n, l and ml which apply, and draw a sketch showing the shape and Question For the following orbitals, state the values of n, l and ml which apply, and draw a sketch showing the shape and orientation of the orbital.a. 3sb. 2pxWrite down the maximum number of electrons in an atom that can havea. quantum number n = 4b. orbital designation 3dc. orbital designation 2pzWrite down the full electron configuration for ground state atoms of:a. S (element 16).b. Pd (element 46). When methane gas burns to form carbon dioxide and water, 803 kJ of heat energy is released. Question When methane gas burns to form carbon dioxide and water, 803 kJ of heat energy is released. CH4(g) 2O2(g) → CO2(g) 2H2O(g) 803 kJA) How much energy is released when 4.5 moles of CH4(g) is burned? (Show calculation)B) How much energy is released when 4.5 g of CH4(g) is burned? (Show calculation)C) Is this reaction endothermic or exothermic? Write only your final answer in the box below. Use proper significant Question Write only your final answer in the box below. Use proper significant figures, units, and dimensional analysis. Show your work on a separate piece of paper and submit as an assignment in PDF format after you submit your exam. If 45.2 g of C2H6 is burned in oxygen, how…

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  • The effect of temperature on the rate of reaction? the effect of surface area on the rate of the reaction? - Question The effect of temperature on the rate of reaction? the effect of surface area on the rate of the reaction? the effect of concentration on the rate of reaction?the effect of catalyst on the rate of reaction?don't just take it from google and paste it please i came here because i didn't understand from google please give a brief and long explanation for each question please.last tutor gave a plagiarised answer if i understood the meaning on google then i wouldn't have come here in the first place. Why does the rate of reaction increase with increasing temp.? A)The activation energy decreases as temp rises Question Why does the rate of reaction increase with increasing temp.? A)The activation energy decreases as temp rises b) Changing the temp usually alters the reaction mechanism, similar to the effect of a catalyst c)The change in temp reduces the overall potential energy change between reactants and productsd) A greater proportion of all the molecules possess kinetic energy equal or greater than activation energye) hotter molecules stick together better A high-altitude balloon is filled with 1.41 × 104 L of hydrogen at Question A high-altitude balloon is filled with 1.41 × 104 L of hydrogen at a temperature of 19 °C and a pressure of 745 torr. What is the volume of the balloon at a height of 20 km, where the temperature is -48 °C and the pressure is 63.1 torr?Select one:a. 1.41 × 104 Lb. 3.43 × 106 Lc. 3.43 × 104 Ld. 1.27 × 105 L SESSION I: Separation and Analysis of Group I Cations Separation:- Question Get Answer SESSION I: Separation and Analysis of Group I Cations Separation:- 1. Place 1 mL (ca. 20 drops) of your unknown solution provided to you for analysis in a 10-cm test tube. Write the unknown number in your notebook. 2. Add 5 drops of 6.0 M HCl to the unknown solution and mix the content thoroughly with a glass stirring rod. Add a few more drops of the acid if the amount of the white precipitate formed appears to be small. 3. Take…

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  • Environmental scientists calculating pollutant half-lives often define a transport rate constant that is analogous to a reaction rate constant - Question Environmental scientists calculating pollutant half-lives often define a transport rate constant that is analogous to a reaction rate constant and describes how a pollutant moves out of an ecosystem. In a study of the gasoline additive MTBE in Donner Lake, California, scientists from the University of California, Davis, found that in the summer the half-life of MTBE in the lake was 28.02 days.Assume that the transport process is first order. What was the transport rate constant of MTBE out of Donner Lake during the study? Express your answer in reciprocal days. 21. You Wish To Prepare An Aqueous Solution Of Glucose (C6H1206) Which Has A Transcribed Image Text from this Question21. You wish to prepare an aqueous solution of glucose (C6H1206) which has a boiling point of 105.50°C. You will be dissolving the glucose in a sample of 95.00 grams of the solvent water to produce the solution. The normal boiling point of pure water is 100.000°C and the value of Ko is for 0.512°C/m for water. 21a. What molality of glucose is required to produce the desired boiling point? 21b. How many grams of glucose should you use to make the solution? Get Answer Granular activated carbon particles where used in adsorption batch tests using solutions of phenol in water. The Question Get Answer Granular activated carbon particles where used in adsorption batch tests using solutions of phenol in water. The table below shows the equilibrium data, that is, the phenol surface concentration dependence on the equilibrium concentration in solution. Determine the isotherm that fits the data and give the constants of the equation using the given units. [40 marks] A buffer solution contains 0.244 M nitrous acid and 0.379 M sodium nitrite. Question A buffer solution contains 0.244 M nitrous acid and 0.379 M sodium nitrite. If 0.0192 moles of nitric acid are added to 150. mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon adding nitric acid)pH = _______________________________A buffer solution contains 0.366 M NaHCO3 and 0.229 M K2CO3. If 0.0266 moles of…

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  • 19. A Solution Is Prepared By Dissolving 4.28 Grams Of An Unknown Substance Into - Transcribed Image Text from this Question19. A solution is prepared by dissolving 4.28 grams of an unknown substance into 25.0 grams of chloroform. The resulting solution has a boiling point of 63.50°C. For chloroform, the normal boiling point is 61.20°C and the value of K. is 3.63°C/m. 19a. How many moles of the unknown solute are present in the solution? 19b. What is the molar mass of the unknown solute? 11. A 2.300 Molal Solution Of KCl Is Prepared. How Many Grams Of KCl Transcribed Image Text from this Question11. A 2.300 molal solution of KCl is prepared. How many grams of KCl are present in a sample containing 5.00 kg of water? a. 857 g b. 225 g C. 75 g d. 114 g e. 547 g 12. What mass of phenol, C6H5OH, (molar mass = 94.11) must be dissolved in 25.0 g of naphthalene to produce a solution that is 0.15 m in phenol? a) 3.8 b) 0.35 c) 0.56 d) 1.5 e) 1.8 13. Consider the following four substances: a. SO2 b. Naci C. CH3OH d. He 13a. Based on interparticle forces, which of these four substances would you expect to have the highest boiling point? 13b. Based on interparticle forces, which of these four substances would you expect to have the lowest boiling point? 14. This Question Refers To The Aqueous Solutions Shown Below. Which Of These Four Transcribed Image Text from this Question14. This question refers to the aqueous solutions shown below. Which of these four solutions would have the highest boiling point? (a) 0.35 m C2H4OH)2 (aq) (b) 0.50 m C12H24011 (aq) (c) 0.20 m KF (aq) (d) 0.24 m MgCl2 (aq) 15. If 2.00 g of helium gas (He) and 4.00 g of oxygen gas (O2) are mixed together what is the mole fraction of helium in the solution? a. 0.500 b. 0.333 C. 0.800 d. 0.200 e. 0.666 16. Which Combination Of Substances Would NOT Be Expected To Form A Homogeneous Solution? Transcribed Image Text from this Question16. Which combination of substances would NOT be expected to form a homogeneous solution? a.…

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  • 9. Each Question Below Refers To The Following Four Aqueous Solutions. (3 Points Each). - Transcribed Image Text from this Question9. Each question below refers to the following four aqueous solutions. (3 points each). (a) 0.20 m sucrose (C12H24012) (b) 0.10 m K3PO4 (c) 0.12 m Nazo (d) 0.35 m ethanol (C2H50) a b c d 9a. Which solution has the highest boiling point? 9b. Which solution has the lowest freezing point? 9c. Which solution has the highest vapor pressure of water? a b c d a b c d 10. The vapor pressure of two solvents in their pure states) are given below (at 25°C): benzene (C6H6) 94.4 mm Hg chloroform (CHC13) 172.0 mm Hg Using the above data, calculate the vapor pressure of chloroform over a chloroform-benzene solution at 25°C, which contains 50.0 g CHCl3 and 50.0 g C6H6- a. 125 mm Hg b. 172 mm Hg d. 68.0 mm Hg C. 148 mm Hg e. none of these 24 Designate The Absolute Configuration Of Major Product Of This Reaction? (R) Only Ma Transcribed Image Text from this Question24 Designate the absolute configuration of major product of this reaction? (R) only ma CHRONa Br 25. Which of the following reacts the fastest by the SN2 mechanism? a. CH3Br b. CH3CH2Br c. (CH3)2CHBO d. (CH3)3CB: ܐܝ 26. Give the product of the following reaction CH-Br NaSH Br 1. We Dissolve 25.8 Grams Of KCl In 585 Grams Of Water. What Is Transcribed Image Text from this Question1. We dissolve 25.8 grams of KCl in 585 grams of water. What is the mole fraction of KCl in the solution? a. 0.0105 b. 0.258 C. 0.0441 d. 0.0422 2. What is the expected freezing point of a 0.50 m solution of Na2SO4 in water? For water, K = 1.86°C/m and the normal freezing point is 0.00°C. a)-5.6°C b) -0.93°C c) -1.9°C d) -2.8°C 3. What is the molality of a solution containing 50.0 grams of propanol (CH3CH2CH2OH) dissolved in 152 grams of water? a. 5.47 m b. 0.00547 m C. 0.833 m d. 0.183 m А Ill : IIII Style -2x² A 22 1-Chloro-4-fluorobutane Is Reacted With One Equivalent Transcribed Image Text from this QuestionА ill…

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  • 6. Linde’s Process Whose Common Application Is In Refrigeration Is Strongly Dependent On Two Chemistry Assignment Help - Transcribed Image Text from this Question6. Linde's process whose common application is in refrigeration is strongly dependent on two factors. Answer the following question related to this process of Liquefaction of gases: (a) Name those two factors? If the following gases are subjected to the decrease in the temperature from 700K, which gas will liquefy first-ammonia, oxygen and Krypton? Give reasons? (4 marks) (b) Calculate the rms speed of a sample of 2-pentene (CsHo) at 35°C? (3.0 marks) 1. (9 Points) Balance The Following Reactions: H3PO4(1) HCIE) C4H3 O2 CO2 Transcribed Image Text from this Question1. (9 points) Balance the following reactions: H3PO4(1) HCIE) C4H3 O2 CO2 H2O PC15(s) H2O LizNs) LiOH) NH3(g) C3H12 O2 CO2 H2O 2. (12 points) Write and balance the equation based upon the following information. H2O(1) Include the states of matter: a. Solid aluminum sulfate, carbon dioxide gas and liquid water are produced by the reaction of an aqueous solution of sulfuric acid and solid aluminum carbonate. b. The reaction of fluorine gas is reacted with solid aluminum oxide to produce solid aluminum fluoride and oxygen gas. c. Solid nickel(II) phosphate and aqueous sodium chloride are produced when aqueous solutions of nickel(II) chloride and sodium phosphate are mixed. 3. (14 points) n-Heptane (C7H16) is an undesirable component of gasoline because it burns explosively and contributes to engine “knocking.” Write the balanced combustion reaction of C7H16. Calculate the number of grams of C7H16 that react if 225 g CO2 (44.01 g/mol) are produced. 4. (14 points) Calcium carbide (CaC2, 64.10 g/mol) reacts with water (18.02 g/mol) to produce acetylene gas (C2H2, 26.04 g/mol), which is used in welding applications. The other reaction product is calcium hydroxide (Ca(OH)2, 74.10 g/mol). How many kilograms of C2H2 can be produced from 75.0 kg CaCz? 13a. Based On Interparticle Forces, Which Of These Four Substances Would You Expect To Transcribed Image Text from this Question13a. Based on interparticle forces, which of these four substances would you expect to have the highest boiling point? 13b. Based on interparticle forces, which of these four substances would you expect to have the lowest…

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  • 9. Each Question Below Refers To The Following Four Aqueous Solutions. (3 Points Each). - Transcribed Image Text from this Question9. Each question below refers to the following four aqueous solutions. (3 points each). (a) 0.20 m sucrose (C12H24012) (b) 0.10 m K3PO4 (c) 0.12 m Na o (d) 0.35 m ethanol (C2H6O) 9a. Which solution has the highest boiling point? 9b. Which solution has the lowest freezing point? 9c. Which solution has the highest vapor pressure of water? a b c d a b c d a b c d 11. A 2.300 molal solution of KCl is prepared. How many grams of KCl are present in a sample containing 5.00 kg of water? a. 857 g b. 225 g C. 75 g d. 114g e. 547 g 12. What mass of phenol, C.H,OH, (molar mass = 94.11) must be dissolved in 25.0 g of naphthalene to produce a solution that is 0.15 m in phenol? a) 3.8 b) 0.35 c) 0.56 d) 1.5 e) 1.8 11. Acetone, CH3COCH; Is A Liquid Hydrocarbon That Is Commonly Used In Pharmaceutical And Transcribed Image Text from this Question11. Acetone, CH3COCH; is a liquid hydrocarbon that is commonly used in pharmaceutical and beauty industries. a. Write a complete balanced equation for the combustion of CH3COCH30)? (1 mark) b. Calculate the heat of combustion of acetone, given the heats of formation of acetone liquid, carbon dioxide gas and water liquid are 145.6 kJ mol-1, -393.5 kJ mol-1 and -285.8 kJ mol-1 respectively. Write the chemical equations for heats of formation and combustion to supplement your answer. (3 marks) c. Draw enthalpy diagram for the above problem. (2 marks) 1. We Dissolve 25.8 Grams Of KCl In 585 Grams Of Water. What Is Transcribed Image Text from this Question1. We dissolve 25.8 grams of KCl in 585 grams of water. What is the mole fraction of KCl in the solution? a. 0.0105 b. 0.258 C. 0.0441 d. 0.0422 2. What is the expected freezing point of a 0.50 m solution of Na2SO, in water? For water, K = 1.86°C/m and the normal freezing point is 0.00°C. a)-5.6°C b) -0.93°C C) -1.9°C d) -2.8°C 3. What is the molality of…

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  • These Are Questions From Practical 7( Electrophilic Substitution To An Aromatic Compound: Nitration Of Acetanilide) In Organic Chemistry. - Transcribed Image Text from this Question1. The experimental melting point was recorded over a range 208-216 °C. The melting point reported for p-nitroacetanilide is 216°C. Why did the sample melt over a range and what compound(s) are responsible for this observation? Briefly explain your observation. (0.5 marks) 2. if the crude product has other isomers of nitro-acetamide (such as ortho- and meta-), they can be removed during the recrystallization from aqueous ethanol. l.e., para-isomer less soluble in aqueous ethanol. What could be a possible reason for the variation in solubility in aqueous ethanol? (0.5 marks) 3. The acetylamido group is a moderately activating group in electrophilic aromatic substitution reactions. What does this mean and based on the structure of the acetylamido group? (0.5 marks) 4. Write down the mechanism for the nitration of acetanilide showing the movement of electrons using curly arrows. Briefly indicate the reason for the regio-selectivity. (1.0 mark) Deactivation Of Heterogeneous Catalysts Is A Ubiquitous Problem That Causes Loss Of Catalytic Rate Transcribed Image Text from this QuestionDeactivation of heterogeneous catalysts is a ubiquitous problem that causes loss of catalytic rate with time. It is a problem of great concern in the practice of industrial catalytic processes as its costs to industry for catalyst replacement and process shutdown total billions of dollars a year. The automotive catalytic converter in a metal canister is placed in the exhaust system of a vehicle. As the exhaust gases pass through it, they flow through the channels in the ceramic monolith, where they encounter the catalyst. The catalyst is generally a multicomponent material, containing the precious metals rhodium, platinum and palladium supported on a mixture of ceria (CeO2), y-alumina (Al2O3), and other metal oxides. This is typically washcoated on a ceramic monolith of cordierite (2Mg.2A12O3. 5SiO2) with strong porous walls enclosing an array of parallel channels in order to achieve a high surface area. Typically, the exhaust gas temperature can reach several hundred degrees in less than a minute. HO co HC N, CO, H.O Al Os particles impregnated with metal catalysts NO HCCO ceramic The catalyst converts the exhaust gases…

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  • 5. A 6.55 G Sample Of Aniline (C6H5NH2, Molar Mass = 93.13 G/mol) Was - Transcribed Image Text from this Question5. A 6.55 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter. If the temperature rose by 32.9°C, use the information below to determine the heat capacity of the calorimeter. 4 C6H5NH2(1) 35 O2(g) → 24 CO2(g) 14 H2O(g) 4 NO2(g) AHørxn--1.28 x 104 kJ Abe X, X A. Ay. A. . . . . Heading 3 CDC Adboc Transcribed Image Text from this Questionabe X, X A. ay. A. . . . . Heading 3 CDC Adboc AabbCCL 1 No Spac... Heading 1 Heading 2 1 Normal Font Styles Paragraph 12 - 1 1 4 5.- 6 3. The first and second ionization enthalpies of a few elements are given below: Element IE1 403 IE2 2632 A B 1139 2103 С 2081 3952 D 738 1451 Answer the following questions based on the above table. (3 marks) (1) Which is the least reactive metal and give one reason for your answer. (ii) Identify the alkaline earth metal. Justify your answer with one point. Sn (k) / Sn 2(aq) (0.5 M) // Pb 2 (aq) (0.3 M) /Pb (k) Tin-Lead Sn (k) / Sn 2(aq) (0.5 M) // Pb 2 (aq) (0.3 M) /Pb (k) Tin-Lead battery is provided. E°Sn 2/Sn° = ‒ 0.14V, E°Pb 2/Pb° = ‒ 0.13V, R = 8.314 J/K mol, F = 96500 C a) Write the electrode reactions and the total reaction. b) Calculate the electrode potentials at the given concentrations. c) Standard Cell potential of the Battery, Cell potential in the given concentrations and Free energy calculate the change d) Calculate the [Sn 2] / [Pb 2] concentration ratio, calculating that this battery will not generate current. Hey Can You Please Help Me With The Following Two Questions I Am Hightly Hey can you please help me with the following two questions I am hightly confused and my prof. didn't help me at all. Thank you! 1.The vapor pressure of liquid acetone, CH3COCH3, is 100 mm Hg at 281 K. A 7.56×10-2 g sample of liquid CH3COCH3 is placed in a closed,…

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  • 3. Real Concepts Has Always Proved To Be Complex In Nature, Mohammad After Going - Transcribed Image Text from this Question3. Real concepts has always proved to be complex in nature, Mohammad after going through Vander Waal's equation was baffled to know the answers to the following questions: (a) Why is the term that corrects for volume, negative and the term that corrects for pressure is positive in van der Waals equation? (2.5 marks) (b) Also, why is n/V squared in the van der Waals equation? (1.5 marks) QUIZ(Azo Dye) 1. Write The Possible Products Achieved From The Following Azo-coupling Reactions -NH2 Transcribed Image Text from this QuestionQUIZ(Azo Dye) 1. Write the possible products achieved from the following azo-coupling reactions -NH2 NEN NEN OH OH ENEN HON 2. Is it possible to obtain diazonium chloride from secondary and tertiary amine? Explain your answer. 3. Most diazo coupling reactions do not work well in acidic solutions. Explain. 4. Draw at least four resonance contributors of following azo dye (methyl orange). Na དཔལ་°༽ 3 ولعل الممل ارتباطات ماته توضخمة Z... I ... 3 T...5.... 10. A. An Ionic Transcribed Image Text from this Questionولعل الممل ارتباطات ماته توضخمة Z... I ... 3 T...5.... 10. a. An ionic solid was dissolved water immediately to make a dilute solution. The initial and final temperature of solution was measured and following graph was obtained Final) I TEBIP Change in T Initial T TIME - Will the solution become hot or cold? What is the nature of solution? (1 mark) b. Csl(s) having lattice energy-664 KJ/mol when dissolved in water gave the enthalpy of solution of 33 KJ/mol. Calculate the enthalpy of hydration (KI) of 0.65 moles of Csl. (2 marks) c. Draw an enthalpy diagram for the above ( Csl solution). (2 marks) بنات المتحدة الأمريكية) 6. Cisplatin (A), Shown Below, Is A Simple Planar Molecule That Has Excellent Properties Transcribed Image Text from this Question6. Cisplatin (A), shown below, is a simple planar molecule that has excellent properties as chemotherapeutic and is currently used to treat a wide variety of cancers. The synthesis of this compound requires a specific sequence of substitution reactions; carried out in a different order,…

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  • 1. Design The Synthesis Of Each Of The Following Using Methyl, Ethyl Or Cyclopentyl - 1. Design the synthesis of each of the following using methyl, ethyl or cyclopentyl halides, necessary solvents, and inorganic materials as starting materials. More than one step may be necessary, but do not repeat what you have done in the previous aspects of the problem. (a) CH3I (b) CH3CH2I (c) CH3OH (d) CH3CH2OH (e) CH3SH (f) CH3CH2SH (g) CH3CN (h) CH3CH2CN (i) CH3OCH3 (j) CH3OCH2CH3 (k) Cyclopentene Determine The Theoretical Yield Of PbCl. PO AED MISSED THIS? Read Section 4.4 (Pages Transcribed Image Text from this QuestionDetermine the theoretical yield of PbCl. PO AED MISSED THIS? Read Section 4.4 (Pages 149-155): Watch KCV 4,4, IWE 4.6. Lead ions can be precipitated from solution with KCI according to the following reaction: Pb2 (aq) 2 KCl(aq) PbCl(s) 2 K (aq) When 28.8 g KCl is added to a solution containing 25.7 g Pb2 . a PbCl, precipitate forms. The precipitate is filtered and dried and found to have a mass of 29.1 g 8 m Submit Request Answer Part C Determine the percent yield for the reaction, 190 AED 96 CHEMI 10 Practice Final Exam CHEM110 Practice Final Exam QUESTION 25 When 20.0 ML Transcribed Image Text from this QuestionCHEMI 10 Practice Final Exam CHEM110 Practice Final Exam QUESTION 25 When 20.0 mL of an acetic acid (CH,COOH) solution is titrated with a 0.0610 M sodium hydroxide (NaOH) solution, the equivalence point in the titration is 41.09 ml. a) What was the concentration of acetic acid solution? b) What are the [H30'], [OH-] and [CH3COO-) at the equivalence point? c) What is the pH at the equivalence point? Note: The Ka for acetic acid (CH3COOH) is 1.74 x 10-4. NaOH CH₃COOH 2on eq. pt 41.09 ml ka 0.obim 174x105 2 3. Corrosion And Oxidation (1) Briefly Explain Using Diagrams And/or Appropriate Equations The Following Transcribed Image Text from this Question3. Corrosion and Oxidation (1) Briefly explain using diagrams and/or appropriate equations the following forms of corrosion; a) General corrosion b) Pitting corrosion c) Intergranular corrosion d) Selective alloy dissolution e) Crevice corrosion [15 marks] (ii) What is tribocorrosion? Explain using diagrams, examples…

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  • Question 242 Pts Calculate The Speed (in Meters Per Second) Of A Tsunami In Chemistry Assignment Help - Question 242 pts Calculate the speed (in meters per second) of a tsunami in the Pacific Ocean. (Assume the wavelength is 200 km (200,000 meters), and the average depth of the Pacific Ocean is 4 km (4000 meters). Round your answer to make it a whole number. See the following examples: 450.7 would be rounded to 451 450.03 would be rounded to 450 Q.8. Observe The Figures (a), (b) And (c) As Shown Below. Axle-A Is Connected Transcribed Image Text from this QuestionQ.8. Observe the figures (a), (b) and (c) as shown below. Axle-A is connected to axle- B and they move in the circle with uniform speed. The other end of axle-B is connected to piston. As the axle completes one circle, the piston moves up and down in the cylinder and completes one oscillation. VOLUME-40 L YOLINE - 1 m CYLINDER CYLINDER CYLINDER AXLEB AXLEB AXLEB 1800 90° 1 m 00 AXLEA AXLE A AXLE A 1 m FIGURE (0) FIGURE 1 m FIGURE When the axle-A is making 0° with horizontal, the volume in the cylinder above the piston is 40 Litre and the pressure in the cylinder is 10 atm. If the temperature in the cylinder is always kept constant for all positions of axle-A, calculate the pressure, when the axle-A makes 270° with horizontal by showing all your work step by step. (3.0 marks) a W hp Fit to page Page view Q.9 (a) What is the total random kinetic energy of all the molecules in 1 mol of hydrogen at a temperature of 300 K? (1.5 marks) (b). What speed would a mole of hydrogen ( whose mass is 2 g) has to move so that the kinetic energy of the mass as a whole would be equal to the total random kinetic energy of its molecules? (1.5 marks) Q.10 a) Explain the relation between the principle of calorimetry and thermal equilibrium. (2.0 marks) b)Why water is considered the best coolant among the coolants. (1.0 mark) II E а w Q.15.How much heat is released to freeze 200g of condensing water vapour. The latent…

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  • Mol L- An FeSCN2 (aq) Solution With Unknown Concentration Has An Absorbance Of 0.300. Show - Transcribed Image Text from this Questionmol L- An FeSCN2 (aq) solution with unknown concentration has an absorbance of 0.300. Show on the plot, how would you use the above plot to determine the concentration of this solution, in mol L"! Concentration of FeSCN2(aq) in the unknown sample is (Show your working on the figure) [1 % marks) (C) In an experiment, • 15.0 mL of 0.200 M sodium hydroxide is added to 20.0 mL of 0.100 M lactic acid solution at 25°C. The equation for the reaction is CH:CH(OH)COOH(aq) NaOH(aq) → CH3CH(OH)COONa(aq) H20(1) Determine which reactant (lactic acid or sodium hydroxide) is the excess reactant in this acid- base reaction. Find out the amount of excess reactant in mole. Question 5 (8 marks) Propane is s fuel and used for heating, cooking etc. When this gas is burnt it produced energy and CO2 gas along with H20 as by products. CzH3(g) O2(g) CO2(g) H2O(1) (a) Balance the above reaction equation. [1m] (b) In a cylinder there are 14.5 L of propane gas at 1.2 atm pressure and 27°C. How much 02 would be required to burn all this gas? At SLC (standard Laboratory Condition) what will be the volume occupied by the CO2 produced from this reaction? [6m] (c) To what category does this reaction fall? [1m] Note: at SLC= 25 °C, 1 atm and molar volume 24.5L; 1 atm = 101 kPa; gas constant, R= 8.314; T (K) = °C 273 (C) The Concentration Of Ethanol (alcohol) In A Driver's Blood Can Be Determined By Transcribed Image Text from this Question(C) The concentration of ethanol (alcohol) in a driver's blood can be determined by analyzing the concentration of ethanol (CH3CH2OH) in the person's blood using standard solution of potassium dichromate. Cr2O72- CH CH OH → Cr CH:COOH (a) Identify whether Cr2O72 is the oxidant or reductant in the above reaction. Support your answer by showing the change in oxidation number in chromium. [3 marks (b) Write the oxidation and reduction half equation, and the overall redox equation for this reaction. Oxidation half equation: Reduction half equation: Overall redox equation…

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  • Rcise 7.89 With EText Link Part A Classify Each Of The Following Chemical Reactions - Transcribed Image Text from this Questionrcise 7.89 with eText link Part A Classify each of the following chemical reactions as a synthesis, decomposition, single-displacement, or double-displacement reaction Drag the appropriate Items to their respective bins. Reset Help UV light CH,Br (9) CH, () Br() Zn (8) CoCl2 (aq) → ZnCl, (aq)CH) N, () 2 NH, (g) KS (aq) Co(NO3), (aq) 2 KNO, (aq) CoS (8) Synthesis Decomposition Single-displacement Double-displacement 3. Real Concepts Has Always Proved To Be Complex In Nature, Mohammad After Going Transcribed Image Text from this Question3. Real concepts has always proved to be complex in nature, Mohammad after going through Van der Waal's equation was baffled to know the answers to the following questions: (a) Why is the term that corrects for volume, negative and the term that corrects for pressure is positive in van der Waals equation? (2.5 marks) (b) Also, why is n/V squared in the van der Waals equation? (1.5 marks) Given The Following Liquids And Their Boiling Points, Which Has The Highest Vapor Pressure Transcribed Image Text from this QuestionGiven the following liquids and their boiling points, which has the highest vapor pressure at its normal boiling point? A. benzene, bp = 80°C OB. The vapor pressure of each of the liquids at its normal boiling point would be the same. C. ethanol, bp = 78°C OD. methanol, bp = 65°C O E. water, bp = 100°C 5 / 12 100% - 4. Answer The Following Questions: A. Classify The Following Transcribed Image Text from this Question5 / 12 100% - 4. Answer the following questions: a. Classify the following as suspension, true solution and colloid: (0.5 x 6= 3 marks) i) Ethanol in water. ii) Muddy water. 111) Copper sulphate in water. iv) Insecticide spray. v) Sulphur in carbon disulphide. vi) Paints. b. Define Tyndall effect. (1 mark) c. How you determine the unknown mixture in lab whether is a true solution, a colloid, or a suspension? (1 mark) d. What is a colloidal solution? Give three examples. (2 marks) A 5. (a) Abdullah Was Operating Microwave Oven While Warming Up The…

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  • ILULUI [Review Topics Use The References To Access Important Values If Needed For This - Transcribed Image Text from this QuestionILULUI [Review Topics Use the References to access important values if needed for this Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) O2(g)—>2NiO(s) AH° = -479.4 kJ w (2) 2Zn(s) 0,(9) 2ZnO(s) AH° -696.6 kJ what is the standard enthalpy change for the reaction: (3) NiO(S) Zn(s) Ni(s) ZnO(S) AH kJ SEANS Hetry Ente Group 2 more group attempts remaining [Review Topics] Use the References to access important valu Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) O2(g)>2Pb0(s) AH° = -434.6 kJ (2) Pb(s) Cl2(g) PbCl2(s) AH° = -359.4 kJ what is the standard enthalpy change for the reaction: (3) 2PbC1,(s) O2(g) 2PbO(s) 2C1, (9) AH° = ? kJ Submit Answer Retry Entire Group 2 more group attempts remaining 1. Following Is A Data From A Adsorption Isotherm Experiment. Using The Data Below, Transcribed Image Text from this Question1. Following is a data from a adsorption isotherm experiment. Using the data below, calculate Cs for each concentration and plot a graph showing Cs vs. Cw. Solution volume (mL) 20 0.02 Added adsorbent dose (g) Initial Pb(II) conc. (mg/L), Co Equilibrium Pb(II) conc. (mg/L), Cw 30 14 60 24 90 40 120 56 150 76 180 101 240 160 300 220 360 280 420 340 From The List Below, Select The Most Incorrect Statement. Select One: A. Reactions Generally From the list below, select the most incorrect statement. Select one: a. Reactions generally proceed faster when reactants are in the liquid or gas phase. b. Almost all reactions occur faster at higher temperatures. c. Increasing the pressure will always increase the rate of a reaction. d. Catalysts can speed up the rate of a reaction. e. Increasing the concentration of a reactant does not always result in an increase in the reaction rate. 4. (5 Points Each). Draw One Lewis Structure For Each Of The Following Four Transcribed Image Text from this Question4. (5 points each). Draw one Lewis structure for each of the following four molecules. Then for each one, determine the molecular shape and indicate the…

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  • Hey Can You Please Help Me With The Following Two Questions. I Am Highly - Hey can you please help me with the following two questions. I am highly confused and my prof. did not explain them at all. Thank you! 1.Answer the following questions based on the phase diagram (not to scale!) for oxygen, O2, and on the following data: ΔHfusion = 13.7 J/g, ΔHvap = 213 J/g, specific heat gas = 0.919 J/g·K (a) What is the normal melting point?______ K The normal boiling point?_____ K (b) At what temperature and pressure do the three phases coexist in equilibrium? T =_____ K, P = _____atm (c) Is oxygen a solid, a liquid or a gas at room temperature and pressure? _______solid, liquid, or gas   If a gas, is it a permanent gas? _________permanent or non-permanent or not a gas (d) Which is the more dense phase, the liquid or the solid? _______liquid or solid (e) A 17.4 g sample of liquid oxygen is heated at a constant pressure of 1 atm from a temperature of 90.2 K to a temperature of 178.7 K. How much energy in kJ is required? _____ kJ 2.In the laboratory you dissolve 24.5 g of chromium(II) iodide in a volumetric flask and add water to a total volume of 375 mL. What is the molarity of the solution? _____M. What is the concentration of the chromium(II) cation? _____M. What is the concentration of the iodide anion?_____ M. D Balance The Following Chemical Equation: Mg(s) Mn203 (s) MgO(s) Mn(s) Transcribed Image Text from this Questiond Balance the following chemical equation: Mg(s) Mn203 (s) MgO(s) Mn(s) O Mg(8) Mn2O3(s) 3MgO(s) Mn(s) O Mg(s) Mn203 (s) Mg(s) Mn(s) 5Mg(s) 2Mn2O3(s) 3MgO(s) Mn(s) 3Mg(s) Mn2O3(s) 3MgO(s) 2Mn(s) d Balance the following chemical equation: Al,S3 (s) H2O(1) Al(OH)3(aq) H2S(9) 3A12S3 (s) 2H2O(l) 2Al(OH)3(aq) H2S(9) Al,S3 (8) 6H2O(1) 2Al(OH)3(aq) 3H2S(9) 3A12S3 (s) 6H2O(1) ► 2Al(OH)3(aq) 8H2S(9) Al2S3 (s) H2O(1) Al(OH)3(aq) H2S(9) d Balance the following chemical equation: C(s) S(s) CS2(s) 6C(s) S: (s) 15CS, (s) O4C(s) S8 (s) 4CS2 (8) O C(s) S8 () CS2(s) 5C(s) S(s) 5CS2 (8) Oxygen Can Be Prepared By Heating Potassium Chlorate: KCIO3(s) -> Klis) O2(g) Of Transcribed Image…

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  • Equilibrium Constant Lab Page 7 Of 7 Pre-Lab A Student Made Solution #3 Using - Transcribed Image Text from this QuestionEquilibrium Constant Lab Page 7 of 7 Pre-Lab A student made solution #3 using the experimental method in this lab, and measured an absorbance of 0. 559. The starting reagents are 2.00 x 10-3 M Fe(NO3)3 and 2.00 x 10-3 M KSCN. 1. What is the equilibrium molarity of FeSCN2 in solution #3? [FeSCN2 1= 2. How many moles of FeSCN2- are in the solution at equilibrium? equilibrium moles FeSCN2 = 3. What are the initial number of moles of FeSCN2 ? initial moles FeSCN2 = 4. What are the initial number of moles of each of the reactants? initial moles Fe3 initial moles SCN = Test Tube number 3 2 5 4 5.00 5.00 5.00 5.00 2.00 1.00 5.00 5.00 3.00 2.00 Fe(NO3)3 sol'n, in mL KSCN sol'n, in mL Distilled H20, in mL equilibrium V, in ml 4.00 1.00 4.00 3.00 10.00 10.00 10.00 10.00 10.00 tte directly, as 34 AM Thu Jun 4 @18% 1T : Lab 2 Jun 4, 2020 at 4:10 AM 6/2/2020 Kirkwood Community College - General Chemistry W CHM-175) Page 1 Lab #2 - Kc: Determining the Equilibrium Constant for a Chemical Reaction What's this lab about? The equilibrium constant for a chemical reaction (K) can tell you a lot about a chemical reaction: how productive a reaction is, how easily it's reversed, and how it responds to changes in concentrations of reactants and products. In this lab you will be using the Ke for something extra: determining which reaction is actually the correct one. What chemistry concepts are in this lab? Molarity: In this experiment concentrations are measured with molarity. egn. 1) Molarities are commonly expressed with square brackets, so [Fe] means "the molarity of ferric ions in solution". A common mistake is to forget that when the volume of a solution is changed - like if another solution is added – then the molarities change. Equilibrium Constant: At a particular temperature, when a reaction comes to equilibrium its equilibrium constant expression is: (eq. 2) The superscripts are the coefficients in the chemical reaction. "1.C.E. Table" method:…

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  • A Balance The Following Chemical Equation: K3PO4(aq) CrCl3(aq) → CIPO4(s) KCl(aq) K3PO4(aq) Chemistry Assignment Help - Transcribed Image Text from this Questiona Balance the following chemical equation: K3PO4(aq) CrCl3(aq) → CIPO4(s) KCl(aq) K3PO4(aq) CrCl3(aq) → CIPO4(s) 2Cl(aq) K3PO4 (aq) CrCl3(aq) → CIPO4(s) KCl(aq) O K3PO4 (aq) 2CrCl: (aq) CIPO4(s) 2KCl(aq) K3PO4(aq) CrCl3(aq) CIPO4(s) 3KCl(aq) b Balance the following chemical equation: Cuo(s) H2(g) → Cu(s) H2O(l) 4Cu0(s) 2H2(g) → Cu(s) 2H2O(1) Cuo(s) H2(g) Cu(s) H2O(1) CuO(s) 3H2(g) Cu(8) 5H20(1) Cuo(s) 5H2(g) 4Cu(s) H2O(l) Balance the following chemical equation: KOH(aq) HNO3(aq) → KNO3(aq) H2O(l) KOH(aq) 2HNO3(aq) → KNO3(aq) 5H2O(1) O KOH(aq) HNO3(aq) → KNO3(aq) H2O(l) 5KOH(aq) HNO3(aq) 2KNO3(aq) 5H20(1) 3KOH(aq) HNO3(aq) → KNO3(aq) 2H2O(1) From Your Study To The PH Glass Electrode, Answer The Following Questions:a- Give A From your study to the pH glass electrode, answer the following questions: a- Give a line diagram for a glass membrane electrode used to obtain the pH of a solution. Identify all of the potentials associated with your cell, and indicate the potential value which is not constant. b- Explain the operational mechanism for this type of electrode. c- If you want to measure the concentration of sodium ion in a given sample. What important changes should be done to the glass electrode? What Is The Enthalpy Change When 1.0 Mol Of Carbon Monoxide, CO(g), Is Combusted? Transcribed Image Text from this QuestionWhat is the enthalpy change when 1.0 mol of carbon monoxide, CO(g), is combusted? How about if the gas in the balloon is combusted? Start by writing a balanced equation for the combustion reaction of your given gas. Then use the bond energy values on your equation sheet to answer this question. AHCornes kJ/molgas ΔΗχη for the balloon An Exercises Says That Has Been An Accident Involving A Lorry Carrying Over An exercises says that has been an accident involving a lorry carrying over 1000 litres of HCl. Some acid have leaked into a nearby river upstream of a site of a special scientific interest. With titration experiments we discover that:    • in the site A the pH=7 • in the site B the pH=0.9 •in the site C the pH=1.2 •in the site D the pH=4.7…

    A Balance The Following Chemical Equation: K3PO4(aq) CrCl3(aq) → CIPO4(s) KCl(aq) K3PO4(aq) Chemistry Assignment Help Read More »

  • Draw The Flowchart In Powerpoint, Word, Chemdraw Or An Online Flowchart Service - Transcribed Image Text from this QuestionFlowchart - Identifying an Unknown Flowcharts can help one understand a process by visualizing what is occurring at each step and decision point Draw a flowchart showing how the process by which an unknown can be identified using chemical tests and derivatives. Use decision/branching points to show the process of elimination based on test results. Keep in mind that a flowchart is an overview and not a detailed procedure. Include the chemdraw structures of three possible unknowns that match the following starting data: Unknown bp: 103°C D Thursday, May 14.2024 PM 102 100 ST 50 75 70 1500 1000 2500 2000 1500 1000 cm. Fig. 1 IR of Unknown liquid Flowchart - Identifying an Unknown Flowcharts can help one understand a process by visualizing what is occurring at each step and decision point Draw a flowchart showing how the process by which an unknown can be identified using chemical tests and derivatives. Use decision/branching points to show the process of elimination based on test results. Keep in mind that a flowchart is an overview and not a detailed procedure. Include the chemdraw structures of three possible unknowns that match the following starting data: Unknown bp: 103°C Perliner Spectrum Version 1061 Thursday, May 14,200 12 PM Analyst Date student Thursday, May 14, 2020 12:54 PM 102 100 95 90 85 701 80 75 70 65 60 58 4000 3500 3000 2500 2000 1500 1000 so cm-1 Fig. 1 IR of Unknown liquid A) Draw A Fully Labelled Diagram Showing How You Could Measure The E0 Value a) Draw a fully labelled diagram showing how you could measure the E0 value for the Mg2 /Mg system using a standard hydrogen electrode. Your diagram should show all the essential conditions for the experiment. (The Mg2 /Mg system means having magnesium metal in contact with Mg2 ions.)       (3 marks) b- The E0 values for the two systems are found to be Explain why the magnesium value is negative. Show transcribed image text Hey Can You Please Help Me With The Following Three Questions. My Prof. Did Hey Can you…

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  • 9. A) Draw A Fully Labelled Diagram Showing How You Could Measure The Evalue - Transcribed Image Text from this Question9. a) Draw a fully labelled diagram showing how you could measure the Evalue for the Mg2 /Mg system using a standard hydrogen electrode. Your diagram should show all the essential conditions for the experiment. (The Mg?*/Mg system means having magnesium metal in contact with Mg² ions.) (3 marks) b- The E' values for the two systems are found to be E' (volts) -2.37 Mg2 (aq) 2e Mg(s) Ag*[aa] e Ag(s) 0.80 Explain why the magnesium value is negative. (1 mark) Give A Line Diagram For A Glass Membrane Electrode Used To Obtain The PH Give a line diagram for a glass membrane electrode used to obtain the pH of a solution. Identify all of the potentials associated with your cell, and indicate the potential value which is not constant.        b- Explain the operational mechanism for this type of electrode. c- If you want to measure the concentration of sodium ion in a given sample. What important changes should be done to the glass electrode? CHML 242 IR And NMR HOMEWORK NAME: DUE ON FEB.6 (TUE.) 8:30 AM SCORE Transcribed Image Text from this QuestionCHML 242 IR and NMR HOMEWORK NAME: DUE ON FEB.6 (TUE.) 8:30 AM SCORE (52) PART A. (3 ea) Please provide the functional groups for each spectrum with given formula. You have to provide the reasons. 1 14 CH3CH 400 3000 20 2000 1200 1000 NSRS 2. mi STIWIMITTANGE BURBERRE C10H14 Υ BO 1800 1900 WAVEVUMBERS An Electrochemical Cell Is Constructed Such That On One Side A Pure Nickel Electrode An electrochemical cell is constructed such that on one side a pure nickel electrode is in contact with a solution containing Ni2 ions at a concentration of 3 × 10-3 M. The other cell half consists of a pure Fe electrode that is immersed in a solution of Fe ions having a concentration of 0.1 M. At what temperature will the potential between the two electrodes be 0.140 V? 11. One Common Phenomena In The Electrochemical Cells Is The Electrode Polarization. It Is Transcribed Image Text from this Question11. One common…

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  • 22. Consider All Salts Mentioned Below As Anhydrous. Which One During Dissolution In Water - 22. Consider all salts mentioned below as anhydrous. Which one during dissolution in water is the most likely to give an exothermic effect? a) CoCl3 b) NH4ClO4 c) NaCl d) RbNO3 23. 25 g of KNO3 was dissolved in 100.0 g of water. The % concentration is Please enter only the final value .......... 24. 25 g of KNO3 was placed in a volumetric flask 100 mL dissolved and the DI water was added to mark and contents were well mixed. The molar concentration of the solution is: Please enter only the final value .......... 25. How many mL of the 0.250 M solution contains 0.620 mol of the substance? Please enter only the final value .......... 26. We need to prepare 25.00 mL of 0.800 molar solution of CuSO4. How many grams of this substance need to be weighed? Please enter only the final value .......... 27. 36.0 % solution of hydrochloric acid has a density 1.19 g/mL. Recalculate its % concentration into molarity Please enter only the final value .......... 28. 200. g of ethanol C2H5OH was dissolved in 300. g of water. Calculate molar fraction of the water Please enter only the final value .......... 2. A General Reaction Written As A 2B C 2D Is Transcribed Image Text from this Question2. A general reaction written as A 2B C 2D is studied and yields the following data: [Al. [B]. Initial A[CJA 0.150 M 0.150 M 8.00 x 10 mol/L.s 0.150 M 0.300 M 1.60 x 10-mol/L-s 0.300 M 0.150 M 3.20 x 10-mol/L-s a.) What is the overall order of the reaction? (3) b.) What is the order of the reaction with respect to B? (1) c.) What is the order of the reaction with respect to A? (2) d.) What is the numerical value of the rate constant? (2.37) e.) Determine the initial rate of B consumption (A[B]At) for the first trial? (1.60x10-2 mol/L.s) f.) Determine the initial rate of C production (A[C]/At) if [A] = 0.200 M and [B] = 0.500 M. (4.74 x 10-2 mol/L.s) Question 10 Not Yet Answered Marked Out Of…

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  • I NEED Help In Calculating The % Yield Of The Reaction. Data: Mass Of - Transcribed Image Text from this QuestionGrignard Synthesis of Benzoic Acid Required Reading: Klein sections 13.6, 21.4 Conversion of an organic halide into a Grignard reagent completely transforms the reactive character of the organic compound. Carbon bears a partial positive charge (8) when bonded to a halogen but a partial negative charge (8) when the carbon is bonded to magnesium. This reversal of polarity can be explained by considering the individual electronegativity of the atoms involved. On the Pauling electronegativity scale, C = 2.6, Br = 2.9 and Mg = 1.2. When carbon is bonded to a halogen such as bromine, Br is the more electronegative atom and C takes on a charge. When carbon is bonded to magnesium, C is the more electronegative atom and takes on a 8 charge. Thanks to the new 8 charge, the carbon of the Grignard reagent is a very reactive nucleophile and base. In this experiment you will make the Grignard reagent phenyl magnesium bromide from bromobenzene and elemental magnesium. This Grignard reagent will then be treated with carbon dioxide (in situ) to form benzoic acid. The Latin phrase in situ is used to denote how the Grignard reagent will be prepared and then, in the same flask, immediately reacted to produce something which is stable enough to be isolated. Many synthetic intermediates are too unstable/reactive to be isolated, so they must be further reacted in situ. The reaction sequence is explained in Klein 21.4 and is shown below in Equation 1, along with the Grignard reaction mechanism. Mger cos) Mer HClag) OH Mgerci Eq. 1 Mg(s) diethyl ether (anhydrous) Mechanism: MOBI OH Mardi MgB Due to the highly nucleophilic and basic nature of the Grignard reagent, a myriad of side- reactions and undesired side-products are possible. Equations 2 and 3 display a couple of these side-reactions MgBrCH Eq. 2 MgBr Water is one of the most common and ubiquitous contaminants to a Grignard reaction (Equation 2). Even if there is only a small amount of water present, the reaction of the Grignard reagent with H20 is an acid-base reaction, and is significantly faster…

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  • Question 2 20 Points Suppose A Future Fusion Reactor Would Be Able To Put - Transcribed Image Text from this QuestionQuestion 2 20 points Suppose a future fusion reactor would be able to put out 931 MW of electrical power continuously. Assume the reactor will produce energy solely through the reaction given below ?H H - H }H (4.03 Men and will convert this energy to electrical energy with an efficiency of 33. Estimate the minimum amount of deuterium in kg needed to run this facility per year. Round your result to the nearest Integer 15 Adv Calculate The Mole Fraction Of MgCl2 And H20 In Aqueous Solution Prepared Transcribed Image Text from this Question15 Adv Calculate the mole fraction of MgCl2 and H20 in aqueous solution prepared by dissolving 210g MgCl2 in 370 mL of H2O. 17 Adv Rank the following solutions in decreasing order of concentratior 0.02 mol NaOH in 250 mL solution 1.25 mol KCl in 1.5 L solution 2.1 mol MgNO3 in 3.00 L solution 211 Sample Came Out What Is The Of The Came AB 1014 22) A Transcribed Image Text from this Question211 sample came out what is the of the came AB 1014 22) A 300 ml urine sample has a mass of 507. The specific gravity of the urine is A) 1014ml B) 0.986 'L Cini D) 0.986 E) 50.7 23) What is the concentration, in mass percent (m/m), of solution prepared from 500 g NCI and 150.0 g of water? A) 0.250% (m/m) B) 33.396 (m/m) C) 40.0% (m/m) D) 25.0% (m/m) E) 3.00% (m/m) 24) An aqueous mixture containing starch ( colloid), NaCl, glucose, and albumin (a colloid) is placed in a dialysis bag and immersed in distilled water. Which of the following correctly describes the location of the indicated substance after dialysis? A) albumin inside B) starch outside C) albumin inside and outside D) water inside only E) starch inside and outside 25) A hydrogen bond is A) an attractive force between molecules where partially positive hydrogen atoms are attracted to partially negative atoms of F.0, or N B) a covalent bond between H and O C) an ionic bond between H and another…

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  • Part 1. A Cylinder With A Movable Piston Contains A Monoatomic Gas At 1.013 Chemistry Assignment Help - part 1. A cylinder with a movable piston contains a monoatomic gas at 1.013 x 105 Pa. The monoatomic gas is replaced by an equal number of molecules of diatomic gas, all other conditions remaining the same. What is the pressure inside the cylinder? part 2. The external pressure is reduced to 7.60 x 104 Pa. What is the effect on the position of the piston? No effect, the piston does not move. The piston moves inward. The piston moves outward. 12. For The Mechanism CH3COCH3 CH3 CH3CO. (k1) CH3CO. CH3. CO (k2) Transcribed Image Text from this Question12. For the mechanism CH3COCH3 CH3 CH3CO. (k1) CH3CO. CH3. CO (k2) CH3. CH3COCH3 CH4 .CH2COCH3 .CH2COCH3 CH3. CH2CO (64) CH3. .CH2COCH3 C2H5COCH3 (k5) the rate of formation of. CH2COCH3 is given by (2 Points) (53) * O k3 (CH3.][CH3COCH3] k4 [CH2COCH3) - KS [CH3.J.CH2COCH3) O k3 (CH3.][CH3COCH3] – k4 [CHZCOCH3] k3 (CH3.J[CH3COCH3) - 64 [.CHZCOCH3] kb (CH3.] [.CH2COCH3] k3 (CH3.J[CH3COCH3] - k5 (CH3.JI.CH2COCH3] Ok3 (CH3.J[CH3COCH3) – k4 [.CH2COCH3) – k5 [CH3.J[CH2COCH3] 1. Using Only The Reactants On Page #3, Propose Syntheses For Each Of The Transcribed Image Text from this Question1. Using only the reactants on page #3, propose syntheses for each of the following molecules: a b ОН С. Alkyl and Aryl Bromides Epoxides Br Br Y Br Br Ph Br Br Br CH Br Br "Br -or a B Br Br Aldehydes H o My Alcohols OH Н 20 OH OH OH OH OH OH CH, OH OH OH Doh a on Ketones ОН OH i í í Esters i å å locks Locks och locks York OCH3 OCH, Miscellaneous CO2 KCN Draw The Detailed Mechanism And Show All Products For The Following Reactions Including Stereochemistry. Transcribed Image Text from this QuestionDraw the detailed mechanism and show all products for the following reactions including stereochemistry. If there is no reaction write "NR”. Clearly indicate whether the mechanism is SN1 or SN2. Upload file on TopHat for grading. Br 1. o NAI acetone H₂O 2. I CH3OH 3 . NaN3_ DMF Br •Br NaockCH 4. DMSO Br CH3CH2OH 5. Ms.office.com/Pages/ResponsePage.aspatid=7of7Nmjui…

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  • 38.4°C 09 B. Solubility Of KNO3 And 1. Mass Of 2. Mass Of 4. - Transcribed Image Text from this Question38.4°C 09 B. Solubility of KNO3 and 1. Mass of 2. Mass of 4. Mass of 3. Temperature 5. Solubility Container Container KNO3 When Crystals (g KNO3/ KNO3 Appear 100 mL H20) TOM 112.799 15.869 3.079 112.849 16.9leg 12.63g 17.61g 14,989 12.559 17.589 12.949 119.78 g 14.129 48.5°C 100 56.0% 5.03g 56.4°C opino 16.849 69.7°C (*) opo Dino nous AgNO3(aq) Na3PO4(aq) —— Ionic Equation Net Ionic Equation H2 TSIO Ca(NO3)2 (aq) Transcribed Image Text from this QuestionAgNO3(aq) Na3PO4(aq) —— Ionic equation Net ionic equation H2 TSIO Ca(NO3)2 (aq) NaCl(aq) Ionic equation 22 oldulozni bos oldala Net ionic equation aidulos → notulo Ca(NO3)2(aq) Na2SO4 (aq)- Ionic equation Net ionic equation Ca(NO3)2(aq) Na3PO4 (aq)- Ionic equation Net ionic equation B. Solubility of KNO3 1. Mass of Container 2. Mass of 4. Mass of 3. Temperature 5. Solubility Container KNO3 When Crystals (g KNO3/ Appear 100 mL H2O) A Gas Cylinder Of Volume 5.00 L Contains 1.31 G Of Ar And 0.0655 A gas cylinder of volume 5.00 L contains 1.31 g of Ar and 0.0655 g of Ne. The temperature is 286 K. Find the partial pressures, total pressure, and mole fractions. a. What is the partial pressure of Ar (in Pa)? b. What is the partial pressure of Ne (in Pa)? c. What is the total pressure (in Pa)? d. What is the mole fraction Ar? This is unit-less. e. What is the mole fraction Ne? This is unit-less. Please please help me answer parts a through to e relating to the infomation at the top of the page. Thank you so much! In An Explosion, A Compound That Is A Solid Or Liquid Decomposes Very Rapidly, In an explosion, a compound that is a solid or liquid decomposes very rapidly, producing large volumes of gas. The force of the explosion results from the rapid expansion of the hot gases. For example, TNT (trinitrotoluene) explodes according to the following balanced equation: a. How many moles of gas are produced in the explosion of 4.9 kg of TNT? b. What volume will these gases occupy if they…

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  • 11. The Mobility Of The B Ion In Aqueous Solution Is 6.84 X 10-8 - Transcribed Image Text from this Question11. The mobility of the B ion in aqueous solution is 6.84 x 10-8 m2 5-1 V-1 at 250C. The potential difference between two electrodes placed in the solution is 31.0 V. If the electrodes are 7.00 mm apart, what is the drift speed of the B ion? [Show your work and send it (2 Points) Balance The Reaction Shown Below That Occurs During Photosynthesis And Use Bond Energies To Transcribed Image Text from this QuestionBalance the reaction shown below that occurs during photosynthesis and use bond energies to estimate the enthalpy change for the reaction that produces 2.77 moles of glucose CO2(g) H2O(g) → C6H12O6 02() Table of bond enthalpies is in the Equation Sheet. Look up the structure for the ring form of glucose (not the linear form) ΔΗ kj Evaluate Change Problem Values Question 12 1 Pts Two Beakers Are Placed In A Sealed, Evacuated, Air-tight Container. Transcribed Image Text from this QuestionQuestion 12 1 pts Two beakers are placed in a sealed, evacuated, air-tight container. One beaker contains pure water The second beaker contains a solution of 0.1 M Fe(CH_COO). If you leave the beakers for a few Wecks, what two things will you observe when you return? Select both correct observations The vapor pressure is equal to the vapor pressure of the pure water The vaper pressure is equal to the vapor pressure of the iron (I) acetate solution the volume of the pure has increased and there is no watet left in the son acetate beaches Both solutions have the same volume they began with The volume of the iron aderate solution has increased and there is no water tent in the pure water beaker, Question 16 1 pts From your solubility rules, you know that 'all Nasalts are soluble. Yet not all sodium salts are equally soluble. Consider the halide salts of sodium- from most to least soluble they are Nal > NaBr > Nach Naf. Why do these salts have different solubilities? Because they have different charges Because they have different vapor pressures Because they have different…

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  • 1 OOO 1 Point Insulin Binds To What Type Of Receptor? Receptor Tyrosine Kinase - Transcribed Image Text from this Question1 OOO 1 point Insulin binds to what type of receptor? Receptor tyrosine kinase G-protein coupled receptor Dimeric membrane receptor that recruit protein kinases 2 1 point Nitrogen assimilation is the process of converting nitrates and nitrites to ammonia. The source of nitrogen originates from the choose your answer... 3 1 point Which of the following is the direct transamination product of glutamate? a-ketoglutarate alanine OOOO pyruvate glutamine 4 1 point Answer the questions regarding the molecule shown below H2N op Name this molecule. type your answer... In what organ would you find this molecule (i.e. in what organ is it produced?)? type your answer... Where in this organ's cells is it produced? Be specific. type your answer... 5 1 point True or false: Phenylalanine is an essential amino acid. True O False 6 1 point Name the purine imtermediate that is the precursor of purine nucleotides (full name, not abbreviation): type your answer... Question 4 Using The Molecular Model Kits And Lewis Diagrams, Build And Draw The Transcribed Image Text from this QuestionQuestion 4 Using the molecular model kits and Lewis diagrams, build and draw the following molecules and determine their electron domain and molecular geometry. HOF CHOCI NH CONH, CH,COOH NHCI . Please use the following table to answer Q4 Compound Lewis Diagram Electron Domain Molecular Geometry Geometry HOF CHOCI NHCONH, 1. 1. 2 2 3. 3. CH,COOH 1. 1 2 21 B 3 NHCI 1. For A Reaction, Ea = 0 And K = 3.5 X 104 5-1 Transcribed Image Text from this Question1. For a reaction, Ea = 0 and k = 3.5 x 104 5-1 at 298 K, the value of k at 320 K will be (1 Point) O 8.4 x 104 S-1 4.2 x 105 S-1 unpredictable 4.2 x 10-5 5-1 3.5 x 104 5-1 Experiment: Mg(s) 2HCl(aq)⟶MgCl2(aq) H2(g) Each Calorimeter Has A Unique Calorimeter Constant. The Calorimeter Constant For The Experiment: Mg(s) 2HCl(aq)⟶MgCl2(aq) H2(g) Each calorimeter has a unique calorimeter constant. The calorimeter constant for the calorimeter you will use in this virtual lab is 5.39 J/°C.…

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  • Wis In Amine 1 And Indicate Whether They Are Part Of The Aromatic System - Transcribed Image Text from this Questionwis In amine 1 and indicate whether they are part of the aromatic system or not. [25%] (b) Consider the bromination of furan shown below and answer BOTH parts (i) and (ii). Br2 Вг dioxane, 0 °C furan 2-bromofuran (i) Give a mechanism for the formation of 2-bromofuran from furan as shown above. I (ii) With reference to the mechanism of the bromination of benzene explain any differences between the two processes. [25%] [continued... (turn over $ @ BER Note: Absolute Value Means All Changes Should Be Recorded As Positive Values. ApH After Transcribed Image Text from this QuestionNote: Absolute value means all changes should be recorded as positive values. ApH after adding NaOH to water. 4.59 ApH after adding NaOH to diluted WA: 0.93 ApH after adding NaOH to diluted CB: 2.67 ApH after adding NaOH to diluted buffer. 0.11 Now rank the four solutions you tested from the most resistant to the least resistant to pH change. Next to each solution listed below, place a 1 for the solution that was MOST resistant (showed to smallest pH change), 2 for the next most resistant, 3, and then 4 for the least resistant (showed the largest pH change). water weak acid Experiment 9 :Video of solution chemistry (Links to an external site.)Video 1 of Single Replacement Reaction (Links to an external Experiment 9 :Video of solution chemistry (Links to an external site.)Video 1 of Single Replacement Reaction (Links to an external site.)Video 2 of Single Replacement Reaction (Links to an external site.)Video 3 of Single Replacement Reaction (Links to an external site.)Experiment 19 :Video of the Ideal Gas Law Experiment (Links to an external site.) A conductance study on a sample of brackish water containing equimolar solution of Question A conductance study on a sample of brackish water containing equimolar solution of MgCl2, NaCl and KCl, showed a resistance of 1600  using a cell with a cell constant500 m-1. Given that the limiting molar ionic conductance of Mg2 , Na , K and Cl-ions are 106.2×10-4, 50.1×10-4, 73.4×10-4 and 76.5×10-4(all in S m2…

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  • Reagent CHO H-OH НО-НН Н -ОН CH2OH ???? CHO H-OH НО-ТЕН НЕОН A CH2OH - Transcribed Image Text from this QuestionReagent CHO H-OH НО-НН Н -ОН CH2OH ???? CHO H-OH НО-ТЕН НЕОН A CH2OH COOH Н. -ОН НО -Н Н -ОН B CH2OH COOH H-OH НО-ЕН Н. ОН CCOOH CH2OH CH2OH Н -ОН НО -Н. НО -Н Н. ОН н ОН D CH2OH E CHO CHO НО -Н НО -Н НО -Н Н -ОН H -ОН Н. -ОН CH2OH G CH2OH CH2OH F CHO Н. CHO НО -Н НЕОН НО -Н Н. ОН H CH2OH CHO н ОН НЕОН НО -H Н. ОН CH2OH CHO Н -ОН Н. -ОН Н. ОН Н. -ОН ОН НО- CHO НО -Н. НО -Н. НО -Н Н ОН CH2OH CHO H -ОН CHO НО -Н Н. ОН CH2OH L Н. Н -ОН СН2ОН НО- H N CH2OH K CH2OH M ОН ОН НО.0 НО.0 НО ОН НО- ОН НО ОН НО ОН НО ОН ОН ОН S ОН ОН о ОН OH R P НО. о НО. НО НО НО ОН ОН х 7 НО ОН НО w НО T OH V НО ОН ОН ОН. ОН НО Which of these is the pyranose form of the starting sugar? compound W This structure is the [ Select] anomer as written and a [ Select] sugar. Which of these is the pyranose form of the enantiomer of the starting sugar? [Select] This is a [Select] sugar. Which of these is the furanose form of the starting sugar? [ Select] ✓ This structure is the [ Select] anomer as written. Which of these is the furanose form of the enantiomer of the starting structure [ Select] Hi Please Help This Is Urgent!!so From The Spectra Provided - Match Each Peak hi please help this is urgent!! so from the spectra provided - match each peak in the NMR to the corresponding atoms and provide jsutification. all atoms bonded to a hydrogen should be accounted for. compound 1 is an example compound 2 is 3- methylpentane ( spectra 14) compound 3 is N,N dimethylamine (19) compund 4 is 1-butanol (20) compound 5: 2-methyl-2-pentene (22) Show transcribed image text Question 6 10 Points…

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  • At The Critical Point Of A Pure Substance, The Densities Of The Liquid And Chemistry Assignment Help - Transcribed Image Text from this QuestionAt the critical point of a pure substance, the densities of the liquid and the vapor are equal Select one or more O a True b. False The degree of freedom for an sucrose solution and water vapor Select one or more a. none of them O b. 2 C.O d. 1 The Vapor Pressure Of Ethanol At 25°C Is 23.76 Torr. If 0.360 Gram Of Transcribed Image Text from this QuestionThe vapor pressure of ethanol at 25°C is 23.76 torr. If 0.360 gram of ethanol is placed in any rigid container at 25°C with V=10.0 liter. State the mass of ethanol of in each phase Select one a 0.45 g O b.058 g O C0.358 O d.o.238 The normal boiling point of diethyl ether is 34.5 °C, and its Avap Hm.npb is 2.38 Kcal/mol. Find the vapor pressure of ether at 20°C Select one or more a. 479.8 torr b. 379.8 torr C. 726.8 torr d. 626.8 torr What Does The % Error Tell You About The Accuracy Of The Measurements. Choose Transcribed Image Text from this QuestionWhat does the % error tell you about the accuracy of the measurements. Choose the letter corresponding to the explanation that bests fits your results. 1. The graduated cylinder is a more accurate method to deliver volumes of liquid because it has a lower % error. 2. The graduated cylinder is a more accurate method to deliver volumes of liquid because it has a higher % error. 3. The buret is a more accurate method to deliver volumes of liquid because it has a lower % error. 4. The buret is a more accurate method to deliver volumes of liquid because it has a higer % error. 5. The buret and graduated cylinder are equivalent methods to deliver volumes of liquid because because the % error is the same. Write A 200-250 Word Discussion, Using The Following Questions Are A Guide: After Looking Write a 200-250 word discussion, using the following questions are a guide: After looking at a representative number of NCFs from the entire class,…

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  • Write 100-150 Words Describing Your Results, Using The Following Questions As A Guide:What Did - Write 100-150 words describing your results, using the following questions as a guide: What did you see in the lanes containing the mammalian and bacterial cell extract samples on your own NCF after AP detection? What did you see in the lanes containing the IgY samples on your own NCF after AP detection? Was this consistent with what you expected to see, and what did these results tell you? Show transcribed image text Can I Please Get Answers For Question 2 And 3. Image Is Same Transcribed Image Text from this QuestionBackground to Lab 3 Introduction to molecular modeling Molecular graphics and modeling Computer graphics allows one to draw molecules in many different formats and calculate molecular properties. This lab introduces you to a simple molecular modeling program, Chemagic. We will look at some other data sources as well. When you go to Chemagic.org you should click on the left panel to get the Virtual Model Kit. On the left side, in the middle group, is the option Name (whenever there is a box to click I will write it in bold). If you click on that you get to enter the name of a molecule (make sure you spell it exactly correctly). I entered ethane, C2H6. What is the computer doing here? On the right hand side menu, six from the bottom, is Get Model File. If you click on that you get CheMagic Model Kit: File Data The molfile for the current model is in the text area below: https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/ethane/SDF?record_typ... _Jmol-14_05172015473D1 1.00000 0.000000 Jmol version 14.29.38 2019-04-21 15:05 EXTRACT: ((0:73) 8 70 000 999 V2000 -0.7560 0.0000 0.0000 C OOOOOO 0.7560 0.0000 0.0000 C OOOOOO -1.1404 0.6586 0.7845 H 000000 -1.1404 0.3501 -0.9626 H 00000 -1.1406 -1.0087 0.1781 H OOO 1.1404 -0.3501 0.9626 H OOOOOO 1.1405 1.0087 -0.1781 HOOOOOO 1.1404 -0.6586 -0.7845 H OOO000 121000 131000 141000 151000 261000 271000 281000 M END OK This is the molfile, the file in which the computer stores information on the molecule. The first group of numbers at the top are 870 000. This means there are 8 atoms and 7…

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  • EXPERIMENT 6 PRE-LABORATORY QUESTIONS DETERMINING THE SOLUBILITY OF AN UNKNOWN IONIC COMPOUND NAME DATE - Transcribed Image Text from this QuestionEXPERIMENT 6 PRE-LABORATORY QUESTIONS DETERMINING THE SOLUBILITY OF AN UNKNOWN IONIC COMPOUND NAME DATE Calculate the concentration, in grams of solute per 100 g of water of a solution in which 7.462 % of solute dissolved in 25.50 mL of water. 7.4629 -x100 = 29.26 29.30g or solute 2 Sketch two graphs, the first for a solid that's solubility is increasing as a function of temperature, and the second for a solid whose solubility decreases as a function of temperature Be sure to label each axis 25.5g solubility increasing as a function of temperature. 1 Solubilitys T(H) b) golubility si Solubility cleoccuses as a function of temperature. T(K) 3. After the first 7.00 ml, how many mL of distilled water are added to the test tube for each subsequent measurement? 4. How many decimal values can you measure with a buret? EXPERIMENT 6 107 Which Of The Following Statements Is True? A The Equilibrium Constant For A Reaction Transcribed Image Text from this QuestionWhich of the following statements is true? A The equilibrium constant for a reaction has the same value of ask for it's reverse react B At equilibrium the rate for the forward reaction equals that of the reverse reaction. A catalyst increases the rate or speed of a chemical reaction. Statements and A Hich Of The Following Statements Is True? Osmosis Is When Solvent Flows Through A Transcribed Image Text from this Questionhich of the following statements is true? Osmosis is when solvent flows through a semi-permeable membrane to equalize solute concentrations on both sides the membrane. B) A face-centered cubic unit cell has 4 atoms. Homogeneous equilibria involve components in more than one phase. Statements A The Extraction Of Aluminum Metal From The Aluminum Hydroxide Found In Bauxite By The Transcribed Image Text from this QuestionThe extraction of aluminum metal from the aluminum hydroxide found in bauxite by the Hall-Héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. In the first…

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  • A) For The Two Compound Below, Show A Plausible Hydrogen Bonding Where A Is - Transcribed Image Text from this QuestionA) For the two compound below, show a plausible hydrogen bonding where A is the donor and B is the acceptar CH3 -CH, - NHL Alethylamine) B Draw another hydrogen bonding where A is the accepłör and B is the donor Hzc -OH Blacetic acid) Calculate The Freezing Point Of The Solution А -0.776°C B 0.776°C C -7.74°C D Transcribed Image Text from this QuestionCalculate the freezing point of the solution А -0.776°C B 0.776°C C -7.74°C D 7.74°C E -0.140 se the following information to answer questions 17 The Molecular Mass Of Cyclohexanol (C6H120) Is Stion 1 Yet Wered Amu. Select One: Transcribed Image Text from this QuestionThe molecular mass of cyclohexanol (C6H120) is stion 1 yet wered amu. Select one: ked out of 3 A. 101 Flag estion B. 85 C. 89 D. 45 Jestion 2 Which is the correct formula for iron(III) sulfate? ot yet swered Select one: larked out of 4 a. Fe(SO4)3 Flag uestion ob. Fez(SO4)3 c. Fe,S3 d. FeSO: Heats Of Reaction - Acid Transcribed Image Text from this QuestionHeats of Reaction - Acid Instead Of Glucose The Solution Was Prepared With 6.00g Of NaCl. Calculate The Boiling Transcribed Image Text from this QuestionInstead of glucose the solution was prepared with 6.00g of NaCl. Calculate the boiling point of the solution at one at 99.46°C B 99.04°C 100.27°C 100.54°C E 100.96°C Question 19 Calculate the amount of heat removed to convert 65.5 g of steam at 100.0 °C to water at 80.0°C 148 kJ B 5.48 kJ 153 kJ 1.12 kJ E 21.9k) MacBook Air se the following information to answer questions 17 19. (20 Pts) Predict The Major Product(s) Of Each Of The Reactions Below. (1) Transcribed Image Text from this Question19. (20 pts) Predict the major product(s) of each of the reactions below. (1) DMSO, (COCI), (2) ELN OH (1) Hg(OAc), THF-H,O (2) NaBH,, HO PCC OH CH,Cl2 ОН (1) LiAIH. (2) Н,0* HBr H,COOCH,, hv conc. HBr ОН (1) Naвн (2) но" Brz но ОН H,Cro, acetone Question 3 Of The Following, Which Element Has The…

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  • The Carbonic Enzyme Anhydrase Catalyzes The Following Reaction In Red Blood Cells: CO₂ (g) - Transcribed Image Text from this QuestionThe carbonic enzyme anhydrase catalyzes the following reaction in red blood cells: CO₂ (g) H2O (1) - HcO; (aq) H (aq) The following data were obtained for the reaction that done in pH=7.9 at room temp reture and enzyme concentration that is equal to lepe 4.8 nmoldm" [cz]/(mmolda-?) 1.25 v/ (mmol dm-3/5) 0.0246|0.0500 0.0833/0.1670 2.5 5 (A) write the reaction mechanism it the reaction is known to be according to the Michaelis-Menten mechanism. -7 (3) Draw a quality graph of Velocity against the substrate concenctration and evaluate the catalytic constant and the catalytic efficiency of the enzyne. please sketch the graph by Excel and attach the graph at file it you can, please! (c) using a quantitative graph, it must be attached (fe extract the catalytic constant and the efficiency of the entyme, compare to section (3) note : please sketch the graph by Excel and attach- in single file if you can, if you can't attach it to single paper, The carbonic enzyme anhydrase catalyzes the following reaction in red blood cells: CO₂ (g) H20 (1) HcO; (aq) H (aq) The following data were obtained for the reaction that done in pH=7.9 at room temp reture and enzyme concentration that is equal to the 4.8 nmoldm" [CO2]/(mmoldm-?) 1.25 2.5 5 20 v/ (mmol dm-3/5) 10.0278 | 0.0500 0.0833 0.1670 (A) write the reaction mechanism if the reaction is known to be according to the Michaelis-Menten mechanism. A (B) Draw quality graph of Velocity against the substrate concenctration and evaluate the catalytic constant and the catalytic efficiency of the enzyme. I please sketch the graph by Excel and attach the graph at file it you can please! (c) using quantitative graph, (it must be attached extract the catalytic constant and the efficiency of the entyme, compare to section (3) note : please sketch the graph by Excel and attach' in single file if you can, if you can't attach it to single paper, QUESTION 1 A Weak Acid With A Pka = 6.7, In A Solution At Transcribed Image Text from this QuestionQUESTION 1 A…

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  • II Review | Constants Periodic Table The Following Table Lists The Specific Heat Capacities - Transcribed Image Text from this QuestionII Review | Constants Periodic Table The following table lists the specific heat capacities of select substances: Specific heat capacity Substance J/(g. C)] Part A silver 0.235 copper 0.385 0.449 Water (3050 g ) is heated until it just begins to boil. If the water absorbs 5.35x10 J of heat in the process, what was the initial temperature of the water? Express your answer with the appropriate units. iron aluminum 0.903 View Available Hint(s) ethanol 2.42 water 4.184 HA ? Value Units Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining Part B n unknown cubrtanon harmaco anon nhcore 1 710102 tomnoratura of the Question 43 1 Pts The Solubility Of BaCO3(s) In Water At A Certain Temperature Transcribed Image Text from this QuestionQuestion 43 1 pts The solubility of BaCO3(s) in water at a certain temperature is 4.5 x 10-5 mol/L. Calculate the value of Ksp for BaCO3(s) at this temperature. O 4.5 x 10-5 09.0 10-5 0 2.0 x 10-9 O 6.7 x 10-3 O none of these What Is Kp At 1100°C For The Reaction. Pressure Is In Atm. 2 CO(g) Transcribed Image Text from this QuestionWhat is Kp at 1100°C for the reaction. Pressure is in atm. 2 CO(g) O2(g) 2 CO2(g) if Kc is 2.24 x 1022 at the same temperature. a. A Not enough information provided B) 1.99 x 1020 2.48 x 1020 D) 2.52 x 1024 Question 9 Liquid droplets dispersed in another liquid is called A) aerosol B) colloid c) emulsion D sol The Vapor Pressure Of Pure Water At 30°C Is 31.8 MmHg. What Is The Transcribed Image Text from this QuestionThe vapor pressure of pure water at 30°C is 31.8 mmHg. What is the vapor pressure of water (MWt = 18.0g) above a sol prepared by dissolving 18.0 g of methanol (a non-electrolyte, mWt = 32.0 g/mol) in 100 g of water? 17.9 B 13.9 8.90 30.5 E 28.9 N2(g) 3H2(g) 2 NH3 (8) If One Starts With 0.50 Moles Of N, Transcribed Image Text from this QuestionN2(g) 3H2(g) 2 NH3 (8) If one…

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