A company recovers copper-containing scrap from discarded heating equipment. Other metals can be separated from each batch before the copper is melted and reformed.
The table shows the composition of each batch and the manufacturer's requirement for its final product.
| Batch | Final product | Copper before separation (%) | Minimum copper required in final product (%) |
|---|---|---|---|
| P | Thin heat-exchanger tubes | 96.5 | 99.0 |
| Q | Decorative cast panels | 91.0 | 90.0 |
Explain which batch needs more separation before it is recycled. Use data from the table.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.