Assignment 2-solution

# 9 in the class notes let c3t be the concentration

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

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...
View Full Document

## 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.

Ask a homework question - tutors are online