The density of vapours of a substance at 1 atm and is

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

The density of vapours of a substance at 1 atm

P

and

500 \text{ K}

0.3 \text{ kg m}^{-3}

. The vapours effuse 0.4216 times faster than

\text{O}_2

through a pin hole under identical conditions. If

R = 0.08 \text{ litre atm K}^{-1} \text{ mol}^{-1}

. The molar volume of gas is

a \times 10^2

litre. The value of

a

is .....