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A Polydisperse mixture of a polymer can ...

A Polydisperse mixture of a polymer can be describe by the following composition-molar mass data:
`{:(Ni(mol),0.10,0.20,0.40,0.20,0.10),(Mi(kgmol^(-1)),1.00,1.20,1.40,1.60,1.80):}`
Calculate the number -average,mass-average,and`z`-average molar masses.

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