Assignment 2-solution

9 in the class notes let c3t be the concentration

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Unformatted text preview: C3(t) be the concentration between 1990 and 1993, and let C4(t) be the concentration after the beginning of 1994. Assume t = 0 corresponds to 1960. Solution #5: = Concentration between 1990-93 = Concentration after beginning of 1994 t (0) = Corresponding to year 1996 Given CFC mass emission (P) = 1.9 gram per year Molecular weight of CFC-11 = 136 grams per mole Now, g ( ⁄ ) ( ( )⁄ ( ( Hence ⁄ ( ) ) )⁄ )+ ( ( )⁄ ( ) )⁄ From 1993 onwards emission is ignored, hence ( Therefore, This gives, ( )= ) ( ( ( ( )⁄ ) )⁄ ( ( ) )⁄ ) ( )⁄ 6. In Example 11.9 you were given the average production rate of CFC-11 as 3.1 g/year for the 20 years 1970-1989. The emission rate was assumed...
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This note was uploaded on 02/06/2014 for the course ENG 9624 taught by Professor Tahirhusain during the Spring '13 term at Memorial University.

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