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Nitrogen makes up 78.09%, oxygen makes up 20.95%, argon makes up 0.9340%, and the rest is very small amounts of carbon dioxide, neon, helium, methane, krypton, hydrogen, nitrous oxide, carbon monoxide, xenon, ozone, nitrogen dioxide, iodine, and ammonia.

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Q: Which of 3 gases make up 99.9 percent air?
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Which three gases make up over 99.9 percent of the air?

The three gases that make up over 99.9 percent of the air are nitrogen (about 78 percent), oxygen (about 21 percent), and argon (about 0.9 percent).


Which two gases make 99 percent of the air?

Nitrogen and Oxygen.


Which three gases make up 99.9 percent of the air?

co2, nitrogen and oxygen


Air is about 78.0 percent nitrogen molecules and 21.0 percent oxygen molecules Several other gases make up the remaining 1 percent of air moleculesWhat is the partial pressure of nitrogen in air at at?

0.780 Atm


What gases make up 1 percent of air?

Carbon dioxide Argon Water vapours Neon Xenon Krypton Radon Helium


How many known gases are there?

The air contains approximately 78 percent of nitrogen, 21 percent of oxygen, 0.93 percent of argon, and very small amounts of other gases. These other gases include carbon dioxide, neon, helium, and xenon.


Poisonous gases will not do what in the air?

Poisonous gases will not make babies fall from the sky


What gases make most of your air?

oxygen


How is water vapor different from other gases that make up air?

water vapor is different from other gases that make up air because it condenses out of air that has cooled


How much percent of the air in the earth's atmosphere is gasses?

Air by definition is a mixture of gases. Within this mixture, 78% is nitrogen and 20% is oxygen. The remainder is argon and trace gases.


What does air pollution do to animals?

It will make them suffocate from thepoisnous gases in the air.


What is the percent of air out of oxygen carbon dioxide nitrogen and other gases?

Air contain 78,084 % nitrogen, 20,946 % oxygen, 0,9340 argon, 0,039445 carbon dioxide, etc; air without gases is ... vacuum.