Technology0 min ago
Gas volumes
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Why does 1 mole of Helium occupy the same volume as 1 mole of say Radon despite the fact that Helium is a much smaller atom.
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The clue is in the conditions. One mole of any gas at a pressure of 101kPa and 273K will occupy a volume of approximately 22.4 cubic decimetres.
At the same temperature of 273K the lighter He atoms will be moving much faster than the heavier Ra atoms but both atoms will have the same translational kinetic energy (given by KE = 3/2kT, where k is the Boltzmann Constant.
At the same temperature of 273K the lighter He atoms will be moving much faster than the heavier Ra atoms but both atoms will have the same translational kinetic energy (given by KE = 3/2kT, where k is the Boltzmann Constant.
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