Question: A random poly ( styrene - butadiene ) copolymer has a number - average molecular weight of 3 5 0 , 0 0 0 g

A random poly(styrene-butadiene) copolymer has a number-average
molecular weight of 350,000gmol and a degree of polymerization n
=5000. What is the weight fraction WS of styrene repeat units in this
copolymer? (Butadiene monomer formula is below.)
WS=,%
A random poly(styrene-butadiene) copolymer has a number-average molecular weight of 350,000gmol

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