An amino acid isolated from a rare marine sponge can be represented by the general structure shown below:
The relative formula mass (MrM_rMr) of this amino acid is 117.
Calculate the relative formula mass of the section of this amino acid molecule represented by [R][\text{R}][R].
Relative atomic masses (ArA_rAr):
H=1C=12N=14O=16 \text{H} = 1 \quad \text{C} = 12 \quad \text{N} = 14 \quad \text{O} = 16 H=1C=12N=14O=16Synthetic and naturally occurring polymers (chemistry only) Questions
Practise AQA GCSE Chemistry Synthetic and naturally occurring polymers (chemistry only) with exam-style questions for Foundation and Higher tier. 18 questions covering Addition polymerisation, Condensation polymerisation (HT only), Amino acids (HT only), and DNA (deoxyribonucleic acid) and other naturally occurring polymers, matched to the AQA GCSE Chemistry (8462) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.