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Unformatted text preview: n actually averaged 0.2
g/year during the 1950s, with negligible
production before 1950. Assume all of the 19501959 production was emitted to the
atmosphere in the same year it was produced.
a)
b) c) Calculate the CFC11 concentration at the beginning of 1960.
Assume that we account for 19501959 CFC11 emissions as described in part
(a). Does this new information influence the calculation of steady state CFC 11
concentration in Example 11.8? Explain.
Does this new information influence the calculation of the time it takes for the
concentration to reach 98 percent of the steady state value? Determine how long
it takes (after 1960) and compare with Example 11.8. Solution #7: (a) Given for year...
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 Spring '13
 TahirHusain

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