Question

explain briefly with an example

please help me

Answer 1

Simply remember vapour density by the formula.

$vapour \: density = \frac{molecular \: mass}{2}$
For example Vapour density of H2 will be

$vd = \frac{mol \: mass}{2} \\ \\ vd = \frac{2}{2} \\ \\ vd = 1$





Hope it helps❤