Air contains very small quantities of other inert gases, as well as hydrogen (H 2), ozone (0 3), nitrogen oxides, carbon monoxide (CO), ammonia (NH 3), methane (CH 4), and sulfur dioxide (SO 2). Air is one of the most important sources of chemical raw materials.ĭry air consists of the following gases (percent by volume): nitrogen (N 2), 78.09 oxygen (O 2), 20.95 argon (Ar), 0.93 and carbon dioxide (CO 2), 0.03. Mankind has long obtained the heat necessary for life and productive activity by burning fuel in air. Air is the source of the oxygen that is necessary for normal existence of the overwhelming majority of living organisms.
The most important geological processes on the earth’s surface, as well as the formation of weather and climate, take place under the action of air and water.
A natural mixture of gases, mainly nitrogen and oxygen, which makes up the earth’s atmosphere.
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