| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | defining points |  |  |  |  |
| 3 | substance and its state | defining point |  |  |  |
| 4 |  | k | °c | °r | °f |
| 5 | triple point of hydrogen | 13.8033 | -259.3467 | 24.8459 | -434.8241 |
| 6 | triple point of neon | 24.5561 | -248.5939 | 44.2010 | -415.4690 |
| 7 | triple point of oxygen | 54.3584 | -218.7916 | 97.8451 | -361.8249 |
| 8 | triple point of argon | 83.8058 | -189.3442 | 150.8504 | -308.8196 |
| 9 | triple point of mercury | 234.3156 | -38.8344 | 421.7681 | -37.9019 |
| 10 | triple point of water | 273.16 | 0.01 | 491.69 | 32.02 |
| 11 | melting point of gallium | 302.9146 | 29.7646 | 545.2463 | 85.5763 |
| 12 | freezing point of indium | 429.7485 | 156.5985 | 773.5473 | 313.8773 |
| 13 | freezing point of tin | 505.078 | 231.928 | 909.140 | 449.470 |
| 14 | freezing point of zinc | 692.677 | 419.527 | 1,246.819 | 787.149 |
| 15 | freezing point of aluminium | 933.473 | 660.323 | 1,680.251 | 1,220.581 |
| 16 | freezing point of silver | 1,234.93 | 961.78 | 2,222.87 | 1,763.20 |
| 17 | freezing point of gold | 1,337.33 | 1,064.18 | 2,407.19 | 1,947.52 |
| 18 | freezing point of copper | 1,357.77 | 1,084.62 | 2,443.99 | 1,984.32 |

Question: what is the triple point of hydrogen's defining point?
Answer: -259.3467

Question: what is the freezing point of aluminium's defining point?
Answer: 660.323