An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressures at temperature 27 C . The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, R = 100 12 J mol -1 K -1 , and molecular mass of O2 = 32, 1 atm pressure = 1.01 10 5 N/m ]

1. A. 0.156 kg
2. B. 0.125 kg
3. C. 0.144 kg
4. D. 0.116 kg

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