An airport uses hydrogen fuel cells to power baggage tractors. The tractors use 100 kg of hydrogen each week.
The airport is comparing two hydrogen suppliers.
| Supplier | Hydrogen produced in one batch | Carbon dioxide released in producing one batch |
|---|---|---|
| P | 50 kg | 425 kg |
| Q | 20 kg | 40 kg |
Explain which supplier would result in lower total carbon dioxide emissions when the tractors use 100 kg of hydrogen.
90 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.