The mass of 5.6 litres of a certain gas at S.T.P. is 12 g. What is the relative molecular mass or molar mass of the gas? - Chemistry

The mass of 5.6 litres of a certain gas at S.T.P. is 12 g. What is the relative molecular mass or molar mass of the gas?

The mass of 5.6 dm³ of a certain gas at STP is 12.0 g. Calculate the relative molecular mass of the gas.

Numerical

5.6 litres of gas at STP has mass = 12 g

So, 22.4 litre (molar volume) has mass =`12/5.6 xx 22.4`

= 48 g

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