Question

SAQ : At STP 0.44 g of a gas has a volume of 224 cm3. What is the molecular mass of the gas?

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Question

At STP 0.44 g of a gas has a volume of 224 cm3. What is the molecular mass of the gas? [Ans. 44 g]

Answer

Mass of gas = 0.44 g

Volume = 224 cm3 or 0.224 L

Number of Moles (n) = Given\ Volume \over 22.4

= 0.224\over 22.4

= 0.01

Molecular mass = Number\ of\ moles (n) \over Given\ Mass

= 0.44 \over 0.01 = 44 g

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