Well; putting simply, 21%
2.66666666667 is the decimal of oxygen in the air
100%. All of the oxygen that I breathe comes from the air! The answer that you were probably after, but did not ask, was about the percentage of oxygen in the air that we breathe. The questions may sound similar but they are not the same. The answer is a little over 20%.
It's the oxygen. Since oxygen doesn't dissolve into nitrogen - air is a mixture, not a solution - you can't call it the solute and the nitrogen the solvent, which may have been the answer you thought you were going to get.
By mass, it is oxygen.
It is just under 21 %.
21%
The mole fraction of Oxygen = 21/100= .21
Oxygen makes up about 21% or approximately 1/5 of the air.
21% of air is pure oxygen
Air: 78% nitrogen, 21% oxygen, 1% other. We breathe oxygen and other molecules.
Oxygen is very important for humans.Man cannot survive without oxygen.It is the primary agent in almost all process that takes place in a human body.When we inhale air we only utilise the oxygen present in the air.But really the air we inhale is a mixture of many gasses.The air we inhale contains about 78% nitrogen ,21% oxygen. When air is inhaled, a portion of that 21% that is oxygen diffuses across the alveolar membrane into the blood to be taken to the body to be used. At the same time, carbon dioxide, a waste gas for the body, is diffusing back across the alveolar membrane to be exhaled. This results in the change in inhaled and exhaled air. Exhaled air has a lower fraction of oxygen and a higher fraction of carbon dioxide as a result of the diffusion across the alveolar membrane.
Oxygen is in the air.
the mole fraction of oxygen= 37/100 0.37 the mole fraction of Nitrogen= .63 that equals to give 1
all of it that I can get
No, there is 21% oxygen in air.
in our air is there mostly oxygen
At the summit of Mount Everest there is approximately 33% of the oxygen that is available at sea level.