A \( 10 \, \text{g} \) mixture of hydrogen and helium is contained in a vessel of capacity \( 0.0125 \, \text{m}^3 \) at \( 6 \, \text{bar} \) and \( 27^\circ \text{C} \). The mass of helium in the mixture is ______ g. (nearest integer) Given : \( R = 8.3 \, \text{J K}^{-1} \text{mol}^{-1} \) (Atomic masses of H and He are \( 1u \) and \( 4u \), respectively)
