Re: mg of oxygen per liter to percent of oxygen in air
Originally posted by Unregistered
Does anyone know this conversion?
Thank you.
No, the density(mass of a liter) of air changes with temperature and pressure, so you would have to define those.
In "normal" air, it is 21% O2 on a mole fraction basis, or
21 mol O2 per 100 mol of air.
Since O2 has a moleculare weight of 32, and air 29, on a mass/mass basis, this is 0.21 x 32/29 = 0.232 kg O2/ kg air. That will be independent of temperature and pressure.
Divide by density of air at your temp. and pressure; you'll have mass of O2 per volume of air.
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