Question 20
The melting and boiling points of six substances, A–F, are listed below.
| Substance | Melting point (°C) | Boiling point (°C) |
|---|---|---|
| A | 101 | 232 |
| B | −30 | −5 |
| C | 44 | 130 |
| D | −45 | 89 |
| E | −5 | 15 |
| F | 1 | 40 |
a) Which substance(s) are gases at room temperature, 25 °C? (1 point)
b) Which substance(s) are liquids at room temperature, 25 °C? (1 point)
| Substance | Melting point (°C) | Boiling point (°C) |
|---|---|---|
| A | 101 | 232 |
| B | −30 | −5 |
| C | 44 | 130 |
| D | −45 | 89 |
| E | −5 | 15 |
| F | 1 | 40 |
a) Which substance(s) are gases at room temperature, 25 °C? (1 point)
b) Which substance(s) are liquids at room temperature, 25 °C? (1 point)