Asked in Serpentine BeltsUS PresidentsChemistry
What is air made of?
April 28, 2009 1:57AM
Dry air contains roughly (by volume) 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and trace amounts of other gases.
Note however that air also contains a variable amount of water vapor, on average around 1%.