α\alphaα-Amino acids have the general formula RCH(NH2)COOH\text{RCH(NH}_2\text{)COOH}RCH(NH2)COOH.
The R group in an α\alphaα-amino acid contains C\text{C}C and H\text{H}H only. This R group has a molar mass of 57 g mol-1.
A polymer is formed from 450 molecules of this α\alphaα-amino acid.
Determine the molar mass of this polymer. Give your answer to the nearest whole number.
4 exam-style questions on OCR A A Level Chemistry Amino acids, amides and chirality. Each one has a worked solution and a mark scheme showing where the marks go.