Use Table 1 and Equation (1) to determine the number average molecular weight, Mw of this batch of PVC polymer in g/mol. Give your answer, correct to 3 significant figures. Table 1. Molecular weight distribution of a batch of PCV polymer Molecular weight Number of Xi Mean Mi (g/mol) range (g/mol) chains in range 0-10000 10000-20000 20000-30000 30000-40000 700 2400 1600 300 M₁ = Σx,M₁ n Answer: Eq (1) 4 XiMi (g/mol)

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