Two electric fans provide the same amount of cooling and have the same working lifetime.
The table shows results from a life cycle assessment.
| Stage | Carbon dioxide released over the life of fan A in kg | Carbon dioxide released over the life of fan B in kg |
|---|---|---|
| Obtaining raw materials | 18 | 24 |
| Manufacturing and packaging | 12 | 20 |
| Use | 95 | 54 |
| Disposal | 4 | 3 |
| Transport | 8 | 7 |
The manufacturer of fan A uses only the manufacturing and packaging results to claim that fan A releases less carbon dioxide over its life than fan B.
Explain why the manufacturer's claim is not justified. Use data from the table in your answer.
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.