The atmosphere consists of about 20%, Nitrogen being the main component at over 70%
We need to know what you mean a percent OF. If oxygen is the only gas present then 100% of the gas is oxygen.
It's literally impossible to say. Humidity varies a lot from time to time and location to location.
The troposphere is 21% oxygen.
20,95 %
Depends on the size of the cylinder, if the air is compressed or not and if it is compressed, to how much psi.
Less than 1 percent of Earth's water is ready for use by humans. Earth is approximately 71 percent water but of all this water only about 2.5 percent is fresh water with the rest being salt water and thus not fit for human consumption. Of the 2.5 percent fresh water the majority of this is frozen in the polar icecaps, present in soil moisture or deep underground where it is out of reach.
Oxygen was not found in the atmosphere of primitive Earth. It is so reactive that it became locked up in compounds at the time of Earths formation. These compounds were varied, but the bulk of them were mineral oxides, silicates, carbon dioxide and water. Free oxygen entered the atmosphere only after the development of blue-green algae, which produced oxygen from carbon dioxide.
1.33 grams of oxygen is carried by each gram of normal healthy hemoglobin.
too much weight from too many keys cause the cylinder to wear out. try attaching key to breakaway keychain to reduce weight.
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%.
The percent of oxygen is 27. this increases the natural percent of 21 by 6 percent causing living organisms to have too much oxygen.
1.12 hours
45 percent of the earths oxygen is produced by our oceans
35 percent
20.8 percent
why do yeast cells consume glucose much more slowly when oxygen is present than when oxygen is absent
20.9%
0.01 percent of the worlds oxygen is from the amazon
20.946% by volum.
Twenty percent (20%) of the moon's atmospheric gases is made up of oxygen.
Typically, the air you breathe is comprised of 18 to 21 percent Oxygen.