* Nitrogen (N2): 78.08% (by volume) - This translates to approximately 75.5% by weight.
* Oxygen (O2): 20.95% (by volume) - This translates to approximately 23.2% by weight.
* Argon (Ar): 0.93% (by volume) - This translates to approximately 1.3% by weight.
* Carbon Dioxide (CO2): 0.04% (by volume) - This translates to approximately 0.04% by weight.
Important Notes:
* Trace Gases: These values represent the major components. There are many other trace gases present in very small amounts.
* Variable Components: The exact composition of air can vary slightly depending on location, altitude, and other factors.
* Weight vs. Volume: It's important to note that these percentages are in terms of volume, not weight. Nitrogen, while the most abundant gas by volume, is slightly lighter than oxygen.
Let me know if you have any other questions!
