Question

1. A 4-kg batch of an experimental bearing material for a hip prosthesis was synthesized, consisting of an alternating copolymer of ethylene (mer CH) and methyl methacrylate (mer = CHO), Benzoyl peroxide (CHCO)。] was used as the initiator. The failure strength of the material was measured to be 85 MPa. (a) How many grams of benzoyl peroxide would be required to achieve the desired yield (4 kg) of the experimental copolymer if the average degree of polymerization is 750? Assume there are two benzoyl peroxide molecules per copolymer molecule. Note: C- 12 g/mol, O- 16 g/mol, H-1 g/mol (b) Determine the average extended length of the copolymer.

Answer 1

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