Question

Type the correct answer in the box.
The maximum water vapor that air can hold at 30°C is about 30 grams/cubic meter. If the humidity of the air is currently 6 grams/cubic meter at the same temperature, the relative humidity is _______ %.

Answer 1

To calculate the relative humidity, you can use the formula:

\[
\text{Relative Humidity} = \left( \frac{\text{Actual Vapor Density}}{\text{Saturation Vapor Density}} \right) \times 100
\]

Given that the actual vapor density is 6 grams/cubic meter and the saturation vapor density at 30°C is 30 grams/cubic meter, you can substitute these values into the formula:

\[
\text{Relative Humidity} = \left( \frac{6 \text{ g/m}^3}{30 \text{ g/m}^3} \right) \times 100
\]

Calculating this gives:

\[
\text{Relative Humidity} = \left( \frac{6}{30} \right) \times 100 = 0.2 \times 100 = 20
\]

Therefore, the relative humidity is **20%**.