Question

1 litre of a gas at NTP weighs 3.17 gram. Calculate the molecular weight and vapour density of the gas. ​

Answer 1

1.97g occupies 1L volume, thus 22.4L will be occupied by : 1.97*22.4 / 1 = 44.128g

Since 1 mole of gas occupies 22.4L and weighs equal to it's molar mass, the molar mass of the gas is 44.128g/mol

Vapour density = Molar mass/2

Thus vapor density = 22.064

Answer 2

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