A gaseous mixture of helium and oxygen is found to have a density of 0 – InterviewSolution

1.	A gaseous mixture of helium and oxygen is found to have a density of 0.5 g dm−3 at 25 ∘C and 0.662 atm. What is the percentage by mass of helium in this mixture? (Given: R=0.08 L atm mol−1 K−1, 5960331=18)
Answer» A gaseous mixture of helium and oxygen is found to have a density of $0.5 {g dm}^{- 3}$ at $25^{\circ} C$ and $0.662 a t m$ . What is the percentage by mass of helium in this mixture? (Given: $R = 0.08 L a t m m o l^{- 1} K^{- 1}, \frac{5960}{331} = 18$ )

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