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7.1 Carbon compounds as fuels and feedstock

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Question 20

An alkane molecule contains 26 atoms in total.

a.

Determine the molecular formula of the alkane.

[2]
b.

Another alkane molecule contains one more carbon atom than the alkane in part (a).

Give the molecular formula of this alkane.

[1]
Markscheme

7.1 Carbon compounds as fuels and feedstock Questions

  1. GCSE
  2. /Chemistry
  3. /7.1 Carbon compounds as fuels and feedstock

91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.

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