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2.5 Types of substance

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Question 16
F

A molecule of poly(ethene) has a relative formula mass of 28 000. It is made from repeating units with the formula C2H4\mathrm{C_{2}H_{4}}C2​H4​.

(relative atomic masses: C = 12, H = 1)

How many carbon atoms are there in this molecule of poly(ethene)?

[1]
A

1000

B

2000

C

2333

D

4000

Markscheme

2.5 Types of substance Questions

  1. GCSE
  2. /Chemistry
  3. /2.5 Types of substance

48 exam-style questions on Edexcel GCSE Chemistry 2.5 Types of substance, covering 2.5.1 Classifying substances by structure and bonding, 2.5.2 Properties of ionic and simple molecular substances, 2.5.3 Giant covalent structures: diamond and graphite, 2.5.4 Fullerenes, graphene and simple polymers, 2.5.5 Properties of metals and non-metals, and 2.5.6 Limitations of bonding models and representations. Each one has a worked solution and a mark scheme showing where the marks go.

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