1) Based on the data in the chart a) Calculate the number-average molecular weight of the polymer. b) If the polymer has a degree of polymerization of 317 which of ethylene, propylene, styrene, and vinyl chloride is repeat unit of polymer? Molecular weight range (g/mol) 8,000-16,000 16,000-24,000 24,000-32,000 32,000-40,000 40,000-48,000 48,000-56,000 Number fraction 0.05 0.16 0.24 0.28 0.20 0.07

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