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Ideal Gas Equation

A polythene b...

Question

A polythene bag of 3 liter capacity is tilled by Helium gas (Occupying 1L at 0.3 atm & 300K ) at 300K. Subsequently enough Ne gas is tilled to make total pressure 0.4 atm at 300K. Calculate ratio of moles of Ne to He in container.

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Solution

$n_{H e} = \frac{P_{H e} V_{H e}}{R T} = \frac{1 \times 0.3}{0.0821 \times 300} n_{H e} = 0.0121$

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