A student investigates how the proportion of tin affects the Brinell hardness of copper-tin alloys (bronze). The results are shown in Table 1.
Table 1
| Percentage by mass of tin in alloy (%) | Brinell hardness (HB) |
|---|---|
| 0 | 45 |
| 3 | 54 |
| 6 | 63 |
| 9 | 72 |
| 12 | 84 |
| 15 | 96 |
| 18 | 108 |
| 21 | 120 |
Determine the percentage by mass of copper in a copper-tin alloy with a Brinell hardness of 92 HB.
Practise Edexcel GCSE Chemistry Transition metals, alloys and corrosion with exam-style questions for Foundation and Higher tier. 97 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
