5.6 litres of gas at N.T.P are found to have a mass of 11 g. The molecular mass of the gas is:

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Solution

The correct option is B 44
At N.T.P 1 mole of gas occupies 22.4L of volume.

$5.6 L - - - - - - - 11 g$
$22.4 L - - - - - \frac{(11 \times 22.4)}{5.6} = 44 g$

So. the molecular mass of the gas is 44g.

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