DP Chemistry (last assessment 2024)
Question 18M.3.sl.TZ2.6e
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.3.sl.TZ2.6e |
| Level | sl | Paper | 3 | Time zone | TZ2 |
| Command term | Determine | Question number | e | Adapted from | N/A |
e.
[Maximum mark: 2]
18M.3.sl.TZ2.6e
Lipids provide energy and are an important part of a balanced diet.
(e)
Determine, to the correct number of significant figures, the energy produced by the respiration of 29.9 g of C5H10O5.
ΔHc (C5H10O5) = 205.9 kJ mol−1
[2]
Markscheme
« =» 0.199 «mol»
«0.199 mol × 205.9 kJ mol–1 =» 41.0 «kJ»
Ignore significant figures in M1.
Award [2] for correct final answer.
Award [1 max] for incorrect significant figures in final answer.
[2 marks]
