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In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is __________ ifthe partial pressures of He and Ne are 1.50 and 2.00 atm, respectively.

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In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is __________ ifthe partial pressures of He and Ne are 1.50 and 2.00 atm, respectively.






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