The mass of a reactant remaining during a reaction is shown in the table.
| Time in s | Mass of reactant remaining in g |
|---|---|
| 15 | 3.64 |
| 75 | 2.20 |
Calculate the mean rate at which the reactant is used up between 15 s and 75 s.
Give your answer in g/s.
122 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.