A student carried out an experiment to determine the enthalpy change of combustion of methanol. The student measured the mass of the spirit burner containing methanol before and after combustion. The recorded mass measurements are shown in Table 1.
Table 1
| Measurement | Mass in g |
|---|---|
| Mass of spirit burner + methanol before combustion | 185.64 |
| Mass of spirit burner + methanol after combustion | 183.87 |
Use the measurements in Table 1 to calculate the mass of methanol, in grams, burned during the experiment.
94 exam-style questions on Edexcel GCSE Chemistry 8.2 Heat energy changes in chemical reactions, covering 8.2.1 Exothermic and endothermic changes, 8.2.2 Bond breaking, bond making and overall energy change, 8.2.3 Calculating energy change from bond energies, and 8.2.4 Activation energy and reaction profiles. Each one has a worked solution and a mark scheme showing where the marks go.