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At 27°C, 2.40g of a certain gas occupies a volume of 9.84 L at a pressure of 172 torr. Calculate the molar mass of the gas.

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charmlearner

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The molar mass of the gas is 30 g /mol.

Calculation of the molar mass:

since 27°C, 2.40g of a certain gas occupies a volume of 9.84 L at a pressure of 172 torrs.

The d should be

= 240 g/9.84 L

= 0.244g

Now the molar mass is

= 0.244g  * 172 / (62.4) * (300 k)

= 30 g/mol

Therefore, The molar mass of the gas is 30 g /mol.

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