Question

What is the mole fraction of oxygen gas in air?

Answer 1

water h2o this is the answer for ur question

Answer 2

Air is a solution of gases. Oxygen represents about 21% of air. In a mole fraction, the moles of oxygen molecules are compared to the total molecules of air of a particular sample. In fractional form, 21 moles of oxygen in an air sample of 100 moles would be represented by 21/100 or 0.21.