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A random poly(isobutylene-isoprene) copolymer has a number-avera

A random poly(isobutylene-isoprene) copolymer has a number-avera

A random poly(isobutylene-isoprene) copolymer has a number-average molecular weight of 200,000 g/mol and a degree of polymerization of 3000. Compute the fraction of isobutylene and isoprene repeat units in this copolymer.

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