Table 1 shows information on the life cycle assessments (LCAs) of disposable drinking straws.
| Information | PLA straws | Polypropylene straws |
|---|---|---|
| Raw materials | Corn starch | Crude oil |
| Mass of 1 straw in g | 1.85 | 1.15 |
| Energy to produce 1 straw in kJ | 45.0 | 72.5 |
| Biodegradable | Yes (industrial) | No |
| Recyclable | No | Yes |
Calculate the energy needed to produce 7.50 kg7.50\text{ kg}7.50 kg of PLA straws.
Use Table 1.
Give your answer in standard form to 3 significant figures.
Practise AQA GCSE Chemistry Life cycle assessment and recycling with exam-style questions for Foundation and Higher tier. 9 questions covering Life cycle assessment and Ways of reducing the use of resources, matched to the AQA GCSE Chemistry (8462) 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.