The energy needed for a delivery van powered by a hydrogen fuel cell to travel 150 km is 84 megajoules (MJ).
The energy released when 1 mole of hydrogen gas reacts with oxygen is 280 kJ.
The volume of 1 mole of a gas at room temperature and pressure is 24 dm3\text{dm}^3dm3.
Calculate the volume of hydrogen gas at room temperature and pressure needed for the van to travel 150 km.
6 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries and 5.2.2 Fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.