Question

Which is heavier Nitrogen or air?

Answer 1

Air and Nitrogen:

1. Nitrogen makes about 78 percent of the air we breathe.
2. Gases with a lower atomic mass than air are lighter than air.
3. The atmosphere is made up of a variety of gases where Nitrogen, Oxygen, Argon, and Carbon dioxide are the most common.
4. Hydrogen, helium, and other noble gases are only found in trace amounts.

Heaviness:

1. The molecular weight of a gas is typically equal to its density. Because air has an average molecular weight of roughly 29 g/mol, any gas with a higher molecular weight will be denser than air.
2. Thus, Nitrogen is lighter than air.
3. The weight of pure nitrogen is 3% less than that of air.

Hence, the air is heavier than Nitrogen.