28%
Around 16% of the air you breathe out is oxygen. This percentage decreases from the 21% of oxygen in the air you inhale due to the exchange of gases that occurs during respiration.
The percentage of oxygen near the ground is approximately 21% in normal atmospheric conditions.
the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.
Codeine : C18H21NO3Molecular Mass: 299Mass of oxygen present: 3 X 16 = 48Mass% of Oxygen : 48/299 * 100 = 16 %
About 21% of the Earth's atmosphere is composed of oxygen.
Oxygen makes up about 21% of the Earth's atmosphere.
The percentage of oxygen in water, vapors or ice is the same.
Close to 21%, near 20.95%.
The percentage of oxygen in inhaled air by humans is approximately 21%. This oxygen is then absorbed by the lungs and transported by the blood to the cells where it is used for energy production in the body.
a)4litre b)3litre
The percentage of oxygen in sucrose is 51,41549 %.
The percentage of oxygen (in mass) is 29,776 %.
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The percentage of oxygen by mass in water is approximately 88.8%.
Venus has virtually no oxygen. However there is a very, very small percentage.
You breathe out 16.3% oxygen.
The percentage of oxygen in the Earth's atmosphere by mass is approximately 21.