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

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Question 9
H

Calcium carbonate decomposes completely when it is heated strongly.

CaCO3→CaO+CO2\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2CaCO3​→CaO+CO2​

25 g of calcium carbonate is heated until it fully decomposes. The relative formula mass of calcium carbonate is 100. The volume of one mole of any gas at room temperature and pressure is 24 dm3.

What is the volume of carbon dioxide produced at room temperature and pressure?

[1]
A

2.4 dm32.4\ \text{dm}^32.4 dm3

B

6.0 dm36.0\ \text{dm}^36.0 dm3

C

24 dm324\ \text{dm}^324 dm3

D

600 dm3600\ \text{dm}^3600 dm3

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

40 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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