A researcher investigated the heat energy released by burning different types of biomass pellets in a combustion calorimeter. The results are recorded in the table below.
| Biomass Pellet Type | Mass of pellet burned / g | Temperature rise / °C |
|---|---|---|
| Douglas Fir | 1.50 | 32.4 |
| Wheat Straw | 1.50 | 18.6 |
Explain, using only the information in the table, why Douglas Fir is the more efficient fuel.
Practise Edexcel GCSE Chemistry Heat energy changes in chemical reactions with exam-style questions for Foundation and Higher tier. 130 questions, matched to the Edexcel GCSE Chemistry (1CH0) 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.
