The data table provides the different gases that make up dry air and their percentage by volume.
Gas Percentage by Volume
Nitrogen(N2)78.084
Oxygen (O2)20.946
Argon (Ar)0.934
Carbon dioxide (CO2)0.039
Neon (Ne)0.00182
Helium (He)0.00052
Methane (CH4)0.00015
Krypton (Kr)0.00011
Hydrogen (H2)0.00005
The pie chart of this data is also included showing: