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

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Question 32

Magnesium burns in oxygen.

$2Mg+O2→2MgO2\text{Mg} + \text{O}_2 \rightarrow 2\text{MgO}$

4.8 g of magnesium reacts completely. The relative atomic mass of magnesium is 24. The volume of one mole of any gas at room temperature and pressure is 24 dm³.

What is the volume of oxygen that reacts at room temperature and pressure?

[1]

$dm31.2\ \text{dm}^3$

$dm32.4\ \text{dm}^3$

$dm34.8\ \text{dm}^3$

$dm39.6\ \text{dm}^3$

Markscheme

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

GCSE
Chemistry
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.

Question bank·3.5 Use of amount of substance in relation to volumes of gases