Sol'ns Rev. Prob. Midterm Exam 09-103 F 06

Sol'ns Rev. Prob. Midterm Exam 09-103 F 06 - Solutions to...

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Solutions to Review Problems for Midterm Exam (post Quiz 1 – Sec. 2.6 through Ch. 3) 09-103 Fall 2006 These review problems represent material covered after Quiz 1. For further review of concepts on the material covered on Quiz 1, refer to the previously distributed review problems and Quiz 1. In addition to the questions below, I encourage you to take the Online Quizzes for Chapters 1 through 3, focusing particularly on those questions reflecting the material covered in lectures, warm-ups 1-11, practice problems 1 through 5, problem sets 1 through 4, and supplemental materials. I. Circle the letter of the correct answer for the following multiple choice questions. 1. Which of the following is true concerning greenhouse gases? (a) N 2 O is an example of one (b) They absorb UV radiation emitted by the Earth (c) Each gas is equally distributed throughout the atmosphere (d) Each gas absorbs IR radiation of the same energy (e) CH 4 has the lowest GWP 2. When CO 2 absorbs IR radiation (a) one stretching vibration occurs, which is the highest energy vibration (b) two bending vibrations occur (c) a change in the overall charge distribution of the molecule occurs (d) both a and b (e) all of the above 3. What international agreement attempted to reduce greenhouse gas emissions? A. The Kyoto Protocol B. The Montreal Protocol C. The Oslo Accords D. The Nuremburg Treaty 4. Scientists believe they know the average global temperature over the last 160,000 years. Which property of the ice core samples from Antarctica provides this information? A. their thickness B. their carbon dioxide concentration C. their 1 H/ 2 H ratio D. their temperature 5. During the Antarctic spring, ozone is destroyed at a greater rate than it is formed A. on the surface of atmospheric ice crystals. B. in a process that is catalytic. C. in polar stratospheric clouds. D. All of the choices are correct . 6. The goal of the Montreal Protocol in 1987 was to A. reduce the amount of new production of chlorofluorocarbons in developed countries. B. recycle existing chlorofluorocarbons rather than release them into the air. C. encourage research into substitutes for chlorofluorocarbons. D. All of the choices are correct. 1
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Solutions to Review Problems for Midterm Exam (post Quiz 1 – Sec. 2.6 through Ch. 3) 09-103 Fall 2006 7. HFCs may be used to replace CFCs. Which compound is a HFC? A. CH 2 Cl–CCl 2 F B. CH 2 FCl C. CF 3 CH 2 F D. CHClF 2 8. The ozone hole is most prominent on the Earth over A. North America. B. Europe. C. Africa. D. Antarctica. 9. The structure of ozone most closely resembles a A. linear molecule with different lengths of chemical bonds, for example, . B. linear molecule with the same length of chemical bonds, for example, . C. bent molecule with different lengths of chemical bonds, for example,
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Sol'ns Rev. Prob. Midterm Exam 09-103 F 06 - Solutions to...

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