Question

calculate the number average molecular weight of a copolymer

erm Remmaining Time 13:27:41 Calculate the number-average molecular weight of a copolymer of butadiene and dimethylsilaxane in which 1/5 of the repeat units are butadiene, and the rest are dimethylsilacane. Assume the number-average degree of polymerization is 101.500. 8.01E6 amu 9.53E6 amu 7.12E6 amu O 6.66E6 amu Cuit & Save Back Question Menu SUbmit Assgnment

Answer 1

Given! arg.degree of polymerisation = 10, 500 Number ang mol wt = m D degnae of polymen's action . anerage repeat moleculas ut. Butadiene (e; Ce so molecular wt of mot ut of = 54 g/mol dimethylsiloxame {(cz), sio] - 74.08 g/mol. 'Go repeat maecular wt O m = (1 x 54 glmar + (4 x 74.08) ghness = 10.8 gloot + 59.264 glines M.² 20.064 g/mol - 500ght Thus, Nor of arg mol wt = 70.064 x 101,500 = 7111496 = 7.111uaG = 7.12 8106 of my = 7.12 E6 amy Ans)