Name CHE 131, Test 2March 19, 2004Useful equations:mMRTu3KmolatmLR-- 08206.0Tsmq Multiple choice. (2 points each)1. Hydrogen and chlorine gases react to form HCl. You and a friend are on opposite sides of a longhallway, you with H2 and your friend with Cl2. You both want to form HCl in the middle of the hallway. Which of the following is true?(a) You should release the H2 first.(b) Your friend should release the Cl2 first.(c) You both should release the gases at the same time.(d) You need to know the length of the room to answer this question.(e) You need to know the temperature to answer this question n.2. Which of the following is not a postulate of the kinetic molecular theory?(a) Gas particles have most of their mass concentrated in the nucleus of the atom.(b) The moving particles undergo perfectly elastic collisions with the walls of the container.(c) The forces of attraction and repulsion between the particles are insignificant.(d) The average kinetic energy of the particles is directly proportional to the absolute temperature.(e) All of the above are postulates of the kinetic molecular theory.3. Consider the following numbered processes:1. A  2B2. B  C + D3. E  2 DH for the process A  2C + E is(a) H1 + H2 + H3(b) H1 + H2(c) H1 + H2 - H3(d) H1 + H2 - H3(e) H1 + H2 + H34. For the combustion of ethyl alcohol as shown in the following equation, which of the following statements is true?C2H5OH (l)+ 3 O2 (g) 2 CO2 (g)+ 3 H2O (l)H = -1.37 x 103(a) The reaction is endothermic.(b) The enthalpy change would be different if gaseous water were produced.(c) The reaction does not involve oxidation or reduction.(d) The products of the reaction occupy a larger volume than the reactants.5. The temperature and pressure at which Cl2 is most likely to behave like an ideal gas are (a) 100 oC and 10.0 atm(b) 200 oC and 0.50 atm(c) 0 oC and 0.50 atm(d) -100 oC and 25 atmShort answer6. Assign the oxidation number of each element in the following chemical equation. Identify whichelement is oxidized and which is reduced. (10 points)4 NH3 (g)+ 5 O2 (g) 4 NO (g)+ 6 H2O (g)7. Name one endothermic process and one exothermic process that you encountered recently that were not associated with your chemistry course. Explain briefly. (8 points)8. Explain why manufacturers produce different types of tennis balls for high and low elevations. (7 points)9. High-quality audio amplifiers generate large amounts of heat. To dissipate the heat and prevent damage to the electronic components, heat-radiating metal fins are used. Would it be better to make these fins out of iron or aluminum? Explain briefly. The specific heat of iron is 0.45 CgJo. The specific heat of aluminum is 0.89 CgJo (7 points)Problems. Show your work and give your answers with the appropriate number of significant figures for full credit.10. A sample of metal (150.0 g) at 75.0 oC is added to 150.0 g of water at 15.0 oC. The temperatureof the water rises to 18.3 oC. Calculate the specific heat of the metal, assuming that all the heat lost by the metal is gained by the water. The specific heat of water is 4.184CgJo. (8 points)11. Use the information in the attached table to find Ho for the following reaction. (8 points)Al2O3(s)+ 3 H2O (l) 2 Al(OH)3 (s)12. How many liters of O2 (g) measured at 22 oC and 763 torr are consumed in the complete combustion of 465 g of diethyl ether in the unbalanced reaction shown below? (12 points)C4H10O (l) + O2 (g)  CO2 (g) + H2O (l)13. Mixtures of helium and oxygen are used in scuba diving. What are the partial pressures of helium and oxygen and the total pressure of the mixture for a sample of 1.96 g He and 60.8 g O2 in a 5.00 L tank at 25 oC? (8 points)Essay. Write your answer in complete sentences using proper grammar. Please make sure you turnin your take-home essay when you turn in your test. (20 points)14. Compare fossil fuel and nuclear energy as methods to generate electricity. Consider the advantages and disadvantages of each, naming at least three differences between the two. If youwere able to choose the source of energy used to generate electricity you used, which would you choose? Why? (Please note that part of this question asks for an opinion. Your opinion should be rationally