Gaseous State

A \(10 \mathrm{~g}\) mixture of hydrogen and helium is contained in a vessel of capacity \(0.0125 \mathrm{~m}^{3}\) at 6 bar and \(27^{\circ} \mathrm{C}\). The mass of helium in the mixture is ____________ g. (nearest integer)

Given: \(\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\)

(Atomic masses of \(\mathrm{H}\) and \(\mathrm{He}\) are \(1 \mathrm{u}\) and \(4 \mathrm{u}\), respectively)