Calculate the total pressure in a 10 lit...

Calculate the total pressure in a 10 litre cylinder which contains `0.4g` of helium, `1.6g` of oxygen and `1.4g` of nitrogen at `27^(@)C`. Also calculate the partial pressure of helium gas in the cylinder. Assume ideal behaviour of gases. Given `R = 0.082` litre atm `K^(-1) mol^(-1)`.

A

0.492 atm

B

49.2 atm

C

4.92 atm

D

0.0492 atm

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A

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