Final answer:
To calculate the relative humidity, divide the actual vapor density by the saturation vapor density and multiply by 100%.
Step-by-step explanation:
To calculate the relative humidity, we need to compare the amount of water vapor in the air to the maximum amount of water vapor the air can hold at that temperature. The formula to calculate relative humidity is:
Relative Humidity = (actual vapor density / saturation vapor density) × 100%
In this case, the actual vapor density is 15.2 g/m³ and the saturation vapor density is 25.7 g/m³. Plugging in these values:
Relative Humidity = (15.2 g/m³ / 25.7 g/m³) × 100% = 59.1%
Therefore, the relative humidity is 59.1%.