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3.5 Use of amount of substance in relation to volumes of gases

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Question 27

The volume of one mole of any gas at room temperature and pressure is 24 dm3.

A sample of an unknown pure gas has a volume of 12 dm3 and a mass of 17 g at room temperature and pressure.

The table shows four possible gases.

GasRelative formula mass, MrM_rMr​
ammonia, NH3\text{NH}_3NH3​17
ethane, C2H6\text{C}_2\text{H}_6C2​H6​30
hydrogen sulfide, H2S\text{H}_2\text{S}H2​S34
carbon dioxide, CO2\text{CO}_2CO2​44

Which of the gases listed could make up this sample?

[1]
A

Carbon dioxide, CO2\text{CO}_2CO2​

B

Ammonia, NH3\text{NH}_3NH3​

C

Hydrogen sulfide, H2S\text{H}_2\text{S}H2​S

D

Ethane, C2H6\text{C}_2\text{H}_6C2​H6​

Markscheme

3.5 Use of amount of substance in relation to volumes of gases Questions

  1. GCSE
  2. /Chemistry
  3. /3.5 Use of amount of substance in relation to volumes of gases

100 exam-style questions on AQA GCSE Chemistry 3.5 Use of amount of substance in relation to volumes of gases, covering 3.5.1 Volumes of gases. Each one has a worked solution and a mark scheme showing where the marks go.

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