What is the Chemical Formula for Air

Answer: The earth’s atmosphere is made up of a mixture of a variety of gases. It is the air that enables animals, plants, and humans to survive. The air we breathe is a mixture of many gases, ranging from nitrogen in significant amounts to argon, which makes up a small percentage of the air we breathe.

There is no chemical formula possible for air because it contains a variety of gases making it a mixture, not a compound and only compounds have a chemical formula. Air is a mixture of around 78 percent N₂, 21% O₂, 1% argon, and increasing amounts of carbon dioxide (0.5 percent CO₂).