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What gas is 21 percent of the Earth's atmosphere?

Oxygen is the gas that makes up about 21 percent of the Earth's atmosphere.


Which gas forms 21 percent of the Earth's atmosphere?

Oxygen forms 21 percent of the Earth's atmosphere.


What gas has a percent of volume of 20.95?

if this is math and your asking what gas has a percent by volume 78.09 it is nitrogen


Gas that makes up 20 percent of total air volume in earths atmosphere?

Oxygen is the gas that accounts for about 20 percent of Earth's atmosphere.


Approximately 20 percent of the earths atmosphere is made up of which gas?

Approximately 20 percent of the Earth's atmosphere is made up of oxygen.


What gas is 21 percent of earth atmosphere?

Oxygen


What is the gas that 78 percent of the atmosphere is made out of?

The gas that makes up about 78% of Earth's atmosphere is nitrogen. Oxygen is the next most abundant gas, making up about 21% of the atmosphere.


According to Figure 15-3 which gas makes up 21 percent of Earth's atmosphere?

Oxygen makes up 21 percent of Earth's atmosphere.


The most abundant gas in the atmosphere is oxygen?

Nitrogen (N2) is the most abundant gas in the Earth's atmosphere having percent volume of 78.8 compare to Oxygen 20.95 %, which falls on the second place after Nitrogen.


How much oxygen is present in an oxygen cylinder then as a percent?

The atmosphere consists of about 20%, Nitrogen being the main component at over 70%


Does oxygen make up 78 percent of the gases in the atmosphere?

No, oxygen makes up about 21% of Earth's atmosphere. Nitrogen is actually the most abundant gas, making up about 78% of the atmosphere.


What is the gas that makes up the largest percent of the atmosphere?

Nitrogen makes up 78% of the Earth's atmosphere. Oxygen makes up about 21%.