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20.8 percent
The percent of oxygen is 53,298 %.
About 21% of air is oxygen.
Yes. Oxygen is a component of water.
To find the percent composition of oxygen in Na2O, find the total molar mass of the compound. Then, divide the molar mass of oxygen by the molar mass of the compound, and multiply by 100% to get the percent oxygen.
45 percent of the earths oxygen is produced by our oceans
The percent of oxygen is 27. this increases the natural percent of 21 by 6 percent causing living organisms to have too much oxygen.
All of it
Oxygen
20.8 percent
35 percent
0.01 percent of the worlds oxygen is from the amazon
50 to 85 percent. In modern times - up to 1975 at least - 70% of the Earth's Oxygen {O2} is produced exclusively by phytoplankton. The oxygen is produced by phytoplankton in the top layers of the Ocean, especially by desmids, diatoms and dinoflagellates---tiny single Celled organisms with shells made of 'glass'.
about 15% to 25 %
3 percent
20.946% by volum.
Twenty percent (20%) of the moon's atmospheric gases is made up of oxygen.