What is the composition of air?
Composition of air
Pure Air Components | By Volume (% Proportion) |
Nitrogen | 78.09 |
Oxygen | 20.94 |
Argon | 0.93 |
Carbon dioxide | 0.03 |
Inert gases, methane, hydrogen, ozone gas | Very small volume in ppm (parts per million) |
Diagram showing the composition of air