Question

why weight of air containing moisture is less than the hot air​

Answer 1

Answer:

So the moist air (which contains only H2O in the gas stage) is less dense than the dry air (which contains principally N & O) because the molecular weight of the water vapour(18) is less than the nitrogen and oxygen (30) which are atmospheric major gases .

Answer 2

Explanation:

Thus at a constant temperature, the more water vapor that displaces the other gases, the less dense that air will become. You may be familiar with the concept that moist air is less dense than dry air. This is true when both have the same temperature or when the moist air is warmer.

Pls mark me as brainliest