A student investigated the reactivity of metals with hydrochloric acid.
The table below shows the student's results.
| Metal | Temperature increase in ∘C^{\circ}\text{C}∘C (Trial 1) | Temperature increase in ∘C^{\circ}\text{C}∘C (Trial 2) | Temperature increase in ∘C^{\circ}\text{C}∘C (Trial 3) | Temperature increase in ∘C^{\circ}\text{C}∘C (Trial 4) | Mean temperature increase in ∘C^{\circ}\text{C}∘C |
|---|---|---|---|---|---|
| Iron | 12 | 14 | 11 | 15 | 13 |
| Aluminium | 42 | 15 | 46 | 41 | YYY |
| Nickel | 8 | 10 | 7 | 11 | 9 |
Calculate the mean temperature increase YYY for aluminium in the table.
Do not include the anomalous result in your calculation.
5 exam-style questions on AQA GCSE Chemistry 4.1 Reactivity of metals, covering 4.1.1 Metal oxides, 4.1.2 The reactivity series, 4.1.3 Extraction of metals and reduction, and 4.1.4 Oxidation and reduction in terms of electrons (HT only). Each one has a worked solution and a mark scheme showing where the marks go.