A processing plant recovers 300 tonnes of long-chain hydrocarbons from waste lubricating oil each week. This supply is expected to remain constant.
The plant can sell the recovered hydrocarbons without further processing or crack them to make smaller molecules.
| Product required by customers | Current demand in tonnes per week | Forecast demand next year in tonnes per week |
|---|---|---|
| Uncracked long-chain hydrocarbons | 180 | 100 |
| Smaller alkane fuels | 85 | 130 |
| Alkene feedstock | 35 | 70 |
Explain how the mass of recovered hydrocarbons cracked each week should change next year. Use the data in the table.
91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.