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6.2 Organic chemistry

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Question 30
H

Glycine is an amino acid with a relative formula mass of 75. A polypeptide chain is made by joining 50 glycine molecules in one chain. One molecule of water is lost at each link.

Relative formula mass of water = 18

What is the relative formula mass of the polypeptide chain?

[1]
A

2850

B

2868

C

2886

D

3750

Markscheme

6.2 Organic chemistry Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Organic chemistry

63 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.

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