| Date | May 2017 | Marks available | 2 | Reference code | 17M.3.hl.TZ2.16 |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | Calculate | Question number | 16 | Adapted from | N/A |
Question
The sun is the main source of energy used on earth.
Calculate the energy released, in MeV, in this reaction, using section 36 of the data booklet.
Markscheme
ΔBE = BE(4He) − (BE(2H) + BE(3H))
OR
ΔBE = 4 x 7.1 − (2 x 1.1 + 3 x 2.8)
= 17.8 «MeV»
Accept answers in range 17.3 to 18.1 «MeV».
Award [1 max] for final answers in range of 3.0 to 3.4 «MeV».
Award [2] for correct final answer.
[2 marks]
Examiners report
[N/A]
