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The number of oxygen molecules in a cylinder of volume1 m3 at a temperature of 27°C and pressure 13.8 Pa is(Boltzmaan's constant k = 1 .38 ×(1) 6.23 x 1026(2) 0.33× 102810-23 JK") is :48ヶ3.3x 1021(4) of these

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