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

Question

A 10 g mixture of hydrogen and helium is contained in a vessel of capacity 0.0125

m^{3}

at 6 bar and 27°C. The mass of helium in the mixture is _______g. (nearest integer)
Given : R = 8.3

J K^{- 1}

m o l^{- 1}

(Atomic masses of H and He are lu and 4u, respectively)

Accepted Answer

Correct answer: 8. (8) P V=n_m i xR T n_m i x= 6×1 2.50.0 8 3×3 0 0≈3 Let mole of He = x Mole of H_2 = 3 -x 4x + 2(3 - x) = 10 x=2mol Mass of He = 8g

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