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?

Molecular Weight Range g/mol Wi 15,000-30,000 0.04 0.01 0.07 30,000-45,000 0.04 0.11 45,000-60,000 0.16 60,000-75,000 0.26 0.24 75,000-90,000 0.27 0.24 0.16 0.12 90,000105,000 105,000-120,000 0.08 0.12 120,000135,000 0.03 0.05