The number of moles of oxygen in 1L of aircontaining 21% oxygen by vol – InterviewSolution

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1.

The number of moles of oxygen in 1L of aircontaining 21% oxygen by volume, understandard conditions, is(A) 0.0093 mole(B) 2.10 moles(C) 0.186 mole(D) 0.21 mole9.[AIPMT 1995

Answer»

One litre of gas consist of 1/22.4 moles.

And if 21% of it is oxygen then it means

Moles of oxygen = (1/22.4)*(21/100) = 0.009375 moles of oxygen

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