A certain volume of air holds 20 grams of water vapor. At that temperature, the maximum amount the air can contain is 100 grams. What is the relative humidity?
A) 100%
B) 20 grams
C) 20%
D) 100 grams
E) More information must be supplied.

Question

Quizplus · Accepted Answer

Relative humidity is the ratio of the amount of water vapor in the air to the maximum amount it can hold at that temperature, expressed as a percentage. In this case, the amount of water vapor in the air is 20 grams and the maximum amount it can hold is 100 grams. Therefore, the relative humidity is (20/100) x 100% = 20%.

A Certain Volume of Air Holds 20 Grams of Water