Question

$100 \,g$ of an ideal gas is kept in a cylinder of $416 \,L$ volume at $27^{\circ} C$ under $1.5$ bar pressure. The molar mass of the gas is __ $g \,mol ^{-1} \cdot($ Nearest integer) (Given $: R =0.083 \,L$ bar $K ^{-1} \,mol ^{-1}$ )

Answer 1

$1.5 \times 416=\frac{100}{ M } \times 0.083 \times 300$
$M = 3 . 9 9$