The relative humidity would be ________ percent if the actual water vapor in the air was 10 grams per cubic meter, the air's capacity to hold water vapor was 20 grams per cubic meter, and the dew point temperature was 20 degrees Celsius.
A) 10
B) 20
C) 50
D) 2
E) 200

Question

Quizplus · Accepted Answer

The relative humidity can be calculated using the equation: (actual water vapor content / maximum water vapor content at that temperature) x 100%. 
The maximum water vapor content at 20 degrees Celsius is 17.3 grams per cubic meter. 
Therefore, the relative humidity = (10/17.3) x 100% = 57.8%. Rounded to the nearest whole number, the answer is 58%, which is closest to choice C (50%).

The Relative Humidity Would Be ________ Percent If the Actual