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Unformatted text preview: roughly balanced. This results in a situation where the amount of the substance in question remains constant with time. Any real-life example that mimics this was given full credit. 16. (1) Volcanic activity can temporarily lower ozone levels (via emission of SO 2 which generates sulfate aerosols which act like PSCs); (2) decreased solar output may reduce ozone production; (3) unusually cold polar winters can strengthen the polar vortex, thereby enhancing ozone loss. Brief mention of any of the above three is worth 5 points each. CFCs having long lifetimes in the atmosphere is not a valid reason, because it is not specific to any particular year. 17. (a) 0.059 ppm; (b) 59 μ g of P; (c) 0.20 kg of F...
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- Spring '11
- Chemistry, Ozone depletion, S10 Exam-1, S10 Exam-1 Answer