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1) A sample of polymer contains 200 molecules of molecular mass 10^3 each ; 300 molecules have 10^4 each and 500 molecules have 10^5 each. Calculate polydispersity index of polymer?.

2) 40% of the polymeric molecules have molecular mass 30,000. If x% and y% of the molecules of the same polymer have molecular masses 20,000 and 60,000 respectively with a PDI of 1.2307, calculate the ratio x and y?
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A month ago in Accounting (Other Fields Homework Help) by Anonymous
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