An α\alphaα-amino acid has the general formula RCH(NH2)COOH\text{RCH(NH}_2\text{)COOH}RCH(NH2)COOH.
In this specific amino acid, the side chain R\text{R}R consists solely of carbon and hydrogen atoms, and has a molar mass of 43 g mol-1.
A biochemist synthesises a synthetic linear polypeptide by the condensation polymerisation of exactly 320 molecules of this α\alphaα-amino acid.
Determine the molar mass of the resulting polypeptide. 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.