In a sample of low-density polyethylene (LDPE), excessive "backbiting" during the free-radical polymerization results in approximately branches for every monomer units. For a single macromolecule chai

Question

In a sample of low-density polyethylene (LDPE), excessive "backbiting" during the free-radical polymerization results in approximately $30$ branches for every $500$ monomer units. For a single macromolecule chain containing exactly $5000$ monomeric ethene units, how many branches are statistically expected?

Prashant Kotian · Accepted Answer

Correct answer: 300. If there are branches per units, the ratio is . For a chain of units, the expected number of branches is .

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