Molar volume of gases
Molar volume of gases
The amount of substance tells us how many particles are present and is measured in moles, mol\text{mol}mol. At the same temperature and pressure, equal numbers of moles of any gases occupy equal volumes.
Step-by-step lessons on AQA GCSE Chemistry 3.5 Use of amount of substance in relation to volumes of gases (HT only), covering 3.5 Use of amount of substance in relation to volumes of gases (HT only). Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.