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The composition of air is usually sated as a dry composition (without water vapour). About 21% is oxygen. The rest is mostly Nitrogen (78%) and Argon (1%). Carbon Dioxide at 300ppm is the next largest with other gases at trace amounts
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∙ 13y ago
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World's population in 2009?
Population: Werewolves: 15 percent of earths population Vampires: 45.2 percent of the earths population Humans: 2 percent of the earths population wookies: 1 percent of the earths population witches and warlocks: 5.8 percent of earths population Actual real animals (you know normal stuff): 31 percent of the earths population
What percentage of earths crust is made up of oxygen and silicon?
silicon and oxygen the answer is silicon and
What percent of the earths mass is water?
0.023%
What percent of the weight of a typical animal is oxygen?
45well there is an exact answer so i would say most of it because the air is full of oxgen and there is lots of trees
What is the percent of oxygen by mass in a pure sample of FeCr2O4?
the answer is 29 percent
What is the percentage of oxygen in earths air?
21% of the air is oxygen
What percent of earths atmosphere is oxygen?
97%
How much oxygen does the ocean have?
45 percent of the earths oxygen is produced by our oceans
What percent of the air we breath is oxygen?
About 21% of air is oxygen.
Approximately 20 percent of the earths atmosphere is composed of?
oxygen
Roughly 78 percent of the earths air is?
nitrogen
What percent of oxygen does the earths grass produce?
The Earth's grass produce 20 to 30 percent oxygen. The other 70 to 80 percent of oxygen is produced by marine plants.
Which of the earths layers has the most air?
The Crust has the most oxygen in it
What is Earths dry air is made up of?
nitrogen and oxygen
What percent of the outdoor air is oxygen?
21 percent
What percent of the Earths atmosphere isn't nitrogen or oxygen?
1/120 or about 0.8%.
What is the gas that makes up twenty one percent of earths atmosphere?
Oxygen.
