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0 votes
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in Chemistry by (75.3k points)

The number of moles of oxygen in one litre of air containing 21% oxygen by volume, under standard conditions, is

(a) 0.0093 mol

(b) 2.10 mol

(c) 0.186 mol

(d) 0.21mol.

1 Answer

+1 vote
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Best answer

The correct option is : (a) 0.0093 mol

Explanation :

Volume of oxygen in one litre of air

21/100 x 210 mL

Therefore no. of mol = 210/22400 = 0.0093 mol

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