Chemistry

Goldie

7 March, 14:37

Three mixtures are prepared from three very narrow molar mass distribution polystyrene samples with molar masses of 10,000, 30,000, and 100,000 g/mol as indicated below:

a. Equal numbers of molecules of each sample

b. Equal masses of each sample

c. By mixing in the mass ratio 0.145:0.855 the two samples with molar masses of 10,000 and 100,000 g/mol.

1. For each of the mixtures, calculate the number-average and weight-average molar masses.

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