Question

what is the composition of air?​

Answer 1

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.

Answer 2

air contains:

1)gases-

OXYGEN 21%

NITROGEN 78%

CARBON DIOXIDE 0.1%

OTHER GASES(ARGON,HELIUM etc)

0.98%

2)water vapour

3)dust particles.......