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

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
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 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

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

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online