Analysis of a sample of polyacrylonitrile shows that there are six lengths of chains, with the number of chains of each length shown in the table below. The molecular weight of the acrylonitrile monomer is 53 g/mol. Calculate the following: (a) The weight average molecular weight and degree of polymerization, (b) The number average molecular weight and degree of polymerization. Number Of chains Мean Molecular weight of chains (g/mol). 3010 10,005 18,005 6010 17,005 15,005 9010 12,010 9005 15,010 4005 18,010

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