Question: 2. Molecular weight data for some polymer are tabulated here. Compute the following: (a) the number-average molecular weight (b) the weight-average molecular weight. (c) the

2. Molecular weight data for some polymer are tabulated here. Compute

2. Molecular weight data for some polymer are tabulated here. Compute the following: (a) the number-average molecular weight (b) the weight-average molecular weight. (c) the polydispersity index Molecular Weight Range g/mol 8,00020,000 20,00032,000 32,000-44,000 44,00056,000 56,000-68,000 68,00080,000 80,00092,000 Xi 0.05 0.15 0.21 0.28 0.18 0.10 0.03 W 0.02 0.08 0.17 0.29 0.23 0.16 0.05

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