Any chemistry students in here? What is the air we breathe comprised of?

Composition of air (% by volume):

Nitrogen (N2): 78.09%

Oxygen (O2): 20.95%

Argon (Ar): 0.93%

Carbon dioxide (CO2): 0.038%

Others (less than 0.002% each): Neon (Ne), Helium (He), Krypton (Kr), Hydrogen (H2), Xenon (Xe).

Our atmosphere also contains water vapor. In addition, Earth's atmosphere contains traces of dust particles, pollen, plant grains and other solid particles.

Following table should help u :-

http://mistupid.com/chemistry/aircomp.htm

Oxygen 21%

Nitrogen 78%

Argon 2%

Corbondioxide 4%

The atmosphere contains about 78% Nitrogen, 21% Oxygen and 1% Argon (though there are small percentages of other gases, like carbon dioxide, which is the fourth largest gas in quantity).

Atmospheric gases by percent composition: Nitrogen (N2) 78 .080 Oxygen (O2) 20 .946 Argon (Ar) 0 .934 Carbon Dioxide (CO2) 0 .038 Neon (Ne) 0 .00182 Helium (He) 0 .000524 Methane (CH4) 0 .00015 Krypton (Kr) 0 .000114 Hydrogen (H2) 0 .00005

Oxygen and Hydrogen. About 98% Hydrogen and only 2% Oxygen. Hope i helped.:--}

78% nitrogen

21% oxygen

.9% argon

.04% carbon dioxide

.0002% other

These numbers are rounded.

Mostly Nitrogen(78.1%) and Oxygen(20.95%) with trace amounts of other gases such as carbon dioxide and carbon monoxide etc.

oxygen-21%

oxygen...