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Unformatted text preview: Grodin, Micah Homework 6 Due: Oct 18 2005, 11:00 pm Inst: Sara Sutcliffe 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. QUESTION 14: In other words: Which wavelengths are we protected from by ONLY ozone? 001 (part 1 of 1) 10 points Draw the Lewis structure for the molecule containing one C and four F atoms. 1. F C F F F 2. F C F F F 3. F C F F F 4. F C F F F 5. F C F F F 6. F C F F F 7. F C F F F correct 8. F C F F F 9. F C F F F 10. F C F F F Explanation: C has 4 valence electrons; F has 7 valence electrons: C F Total number of valence electrons: C 1 4 e- = 4 e- F 4 7 e- = 28 e- 32 e- F C F F F 002 (part 1 of 1) 10 points HFCs may be used to replace CFCs. Which compound is a HFC? 1. CHClF 2 2. CH 2 FCl 3. CF 3 CH 2 F correct 4. CH 2 Cl- CCl 2 F Explanation: Grodin, Micah Homework 6 Due: Oct 18 2005, 11:00 pm Inst: Sara Sutcliffe 2 003 (part 1 of 1) 10 points The goal of the Montreal Protocol in 1987 was to 1. recycle existing chlorofluorocarbons rather than release them into the air. 2. encourage research into substitutes for chlorofluorocarbons. 3. reduce the amount of new production of chlorofluorocarbons in developed countries....
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