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Oxygen makes up about 20% of the atmosphere and is the second most abundant element in the air. Nitrogen is the most abundant component at roughly 78%. Water (H2O) makes up roughly 2 - 4%. The rest are trace gases of less than 1%.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoTheir is 21% of oxygen in inhaled air.
Wiki User
∙ 14y ago21% of the air is oxygen.
Wiki User
∙ 15y ago21% of the air is made up of oxygen
Wiki User
∙ 14y ago2 kg
Wiki User
∙ 13y ago50% by mass
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What is the concentration of oxygen in inhaled air?
Exhaled air contains 16% oxygen and 21% when inhaled.
What substance is removed from the air by living things for respiration?
In the process of respiration OXYGEN is taken in from the atmoshpere and CO2 is released.
Do plants need clean air to make oxygen and food?
No they take in the carbon dioxide, to produce oxygen. So they produce more oxygen in dirtier (more air containg carbon dioxide) air.
What substance is restored to air by photosynthesis?
Carbon dioxide.
What molecule does oxygen come from?
in the air :0
How much oxygen have you got in the air?
There is 21% of oxygen in the air.
How much oxygen it there in the worlds air?
Air is approximately 20% Oxygen.
How much of the air you breathe out is oxygen?
About 16% of the air you expel is oxygen.
How much air is the the oxygen is in the morning?
Concentration of oxygen in dry air is 20,946 %.
How much of the air oxygen?
21% of the atmosphere is oxygen.
Do squid use oxygen and air?
Oxygen - yes. Air - no. Not much of that around underwater.
Is there much oxygen and hydrogen in the air?
Air contains abundant oxygen and trace amounts of hydrogen.
How much oxygen in room?
About 20% of the volume of the air in the room is oxygen.
How much oxygen does exhaled air contains approximately?
A small percent . exhaled air always contains oxygen .
How much of the air does nitrogen and oxygen make together?
99% of air
How much oxygen in air?
Oxygen is it's own element. Air is a combination of elements. That question is not even a sentence, but I think your answer is Air is 19% Oxygen at sea level.
How much oxygen is there in the air?
ideally 21% (20.95%)
