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An oxygen cylinder of volume 30 litres h...

An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of `27 ^(@)C`. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm and its temperature drops to `17^(@)C`. Estimate the mass of oxygen taken out of the cylinder (`R= 8.31 J mol^(-1) K^(-1)`. molecular mass of `O_(2) = 32 u`).

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0.14 kg
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