The vulcanization of polyisoprene is accomplished with sulfur atoms according to Equation 15.4. If 57 wt% sulfur is combined with polyisoprene, how many crosslinks will be associated with each isoprene repeat unit if it is assumed that, on the average, six sulfur atoms participate in eachcrosslink?

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Н СH, Н Н CH Н Н Н -C-C=C-C- 1. Н -C-C-C- C- Н Н Н + (т + п) S. (S () (15.4) tot Н н -C-C-C-ċ- -C-C=C-C- Н СH, Н Н -т