The following table lists molecular weight data for a polytetrafluoroethylene material Compute the following (a) The number average molecular weight (b) The weight average molecular weight (c) The degree of polymerization Molecular Weight Range (g mol) X Wi 0 03 10,00020,000 0 01 20,00030,000 0 09 0 04 30,00040,000 0 15 0 11 0 25 40,000 50,000 0 23 50,000 60,000 0 22 0 24 0 18 60,00070,000 0 14 0 08 70,00080,000 0 12 80,00090,000 0 04 0 07

Question: The following table lists molecular weight data for a polytetrafluoroethylene material. Compute the following: (a) The number-average molecular weight (b) The weight-average molecular weight (c)

The following table lists molecular weight data for a polytetrafluoroethylene material. Compute the following:

(a) The number-average molecular weight

(b) The weight-average molecular weight

Molecular Weight Range (g/mol) Xị Wi 0.03 10,000–20,000 0.01 20,000–30,000 0.09 0.04 30,000–40,000 0.15 0.11 0.2

Molecular Weight Range (g/mol) X Wi 0.03 10,00020,000 0.01 20,00030,000 0.09 0.04 30,00040,000 0.15 0.11 0.25 40,000-50,000 0.23 50,000-60,000 0.22 0.24 0.18 60,00070,000 0.14 0.08 70,00080,000 0.12 80,00090,000 0.04 0.07

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