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Air contains 23% oxygen and 77% nitrogen. Them % of Oxygen in volume
Air contains 23% oxygen and 77% nitrogen. Them % of Oxygen in volume


3 years ago

Arun
25768 Points
							Consider we have 100 g of air. Mass of oxygen in 100 g of air = 23 gMss of nitrogen in 100 g of air = 77 gMolar mass of Oxygen = 32 g1 mole of oxygen or 32 g of Oxygen occupy 22.4 L volume so 23 g of oxygen will occupy 22.432×23= 16.1 LSimilarly, 28 g of Nitrogen occupy 22.4 L, so 77 g of Nitrogen will occupy 22.428×77= 61.6 LTotal volume of air = 16.1 + 61.6= 77.7 L% by volume of Oxygen = 16.177.7×100= 20.7 %

3 years ago
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