A 9-carat gold ring is made from a mixture of metals. The table below shows the mass of different metals in the ring.
Table 1
| Metal | Mass of metal (g) |
|---|---|
| Gold | 6.0 |
| Copper | 6.4 |
| Silver | 3.6 |
The total mass of the ring is 16.0 g.
Rings can also be made from 18-carat gold. The ratio of the mass of gold in 18-carat gold compared to 9-carat gold is 18:918 : 918:9.
Calculate the mass of gold in an 18-carat gold ring of mass 16.0 g.
18 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.