Molecular weight data for some polymer are tabulated here. Compute (a) the number-average molecular weight, and (b) the weight-average molecular weight. (c) If it is known that this material's degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer? Why?

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Molecular Weight Range g/mol 15,000-30,000 Wi 30,000-45,000 45,000-60,000 60,000-75,000 75,000-90,000 00,000-ו05,000 105,000-ו20,000 120,000-135,000 0.04 0.07 0.16 0.26 0.24 0.12 0.08 0.03 0.01 0.04 0.11 0.24 0.27 0.16 0.12 0.05