DP Chemistry (last assessment 2024)
Question 17N.2.hl.TZ0.2c
| Date | November 2017 | Marks available | [Maximum mark: 2] | Reference code | 17N.2.hl.TZ0.2c |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | Calculate | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 2]
17N.2.hl.TZ0.2c
Analytical chemistry uses instruments to separate, identify, and quantify matter.
(c)
A sample of magnesium has the following isotopic composition.
Calculate the relative atomic mass of magnesium based on this data, giving your answer to two decimal places.
[2]
Markscheme
24 x 0.786 + 25 x 0.101 + 26 x 0.113
24.33
Award [2] for correct final answer.
Award [0] for 24.31 with no working (data booklet value).
