HW2 - ChE178:ProblemSet#2 DueFriday,Sept12,2008 1 ....

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Ch E 178: Problem Set #2 Due Friday, Sept 12, 2008 1. A bimodal molecular weight distribution consists of n molecules of molecular  weight M 1 and n molecules of molecular weight M 2 .  A trimodal molecular weight  distribution consists of n molecules of molecular weight M 1,   n molecules of  molecular weight M 2,  and  n molecules of molecular weight M 3 .   The following  is an example of the "reverse engineering:"   Company A makes a polymer with a bimodal molecular weight distribution in which  there is a weight fraction of 0.5 of polymer of molecular weight 20,000 g/mol and a  weight fraction of 0.5 of polymer of molecular weight 100,000 g/mol.  Company B  makes a similar product but with an unknown (to Company A) molecular weight  distribution which has superior mechanical properties.  (The molecular weight  distribution of Company B's product is actually equal wt fractions of 20,000 and 
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This note was uploaded on 12/09/2011 for the course CHEM ENG 178 taught by Professor Segalman during the Fall '08 term at Berkeley.

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HW2 - ChE178:ProblemSet#2 DueFriday,Sept12,2008 1 ....

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