Calculate the number average molecular weight, Macroeconomics

You have two bags of polymer. Bag A has 10 kgs of polymer with weight average molecular weight of 336.6 kg and Bag B has 20kg of polymer with weight average molecular weight 392.7kg. Bag A has a polydispersity of 1.2 and Bag B has a polydispersity of 1.4.

a. What is the number average molecular weight of each bag?

b. If the polymer is polyethylene (mer = C2H4) what average polymerization (chain length) by weight for each bag?

c. If you combine the two bags what is the weight average and numerical average molecular weight of the mixture?

 

Posted Date: 3/28/2013 6:28:07 AM | Location : United States







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