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anonymous
 one year ago
In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is ____ if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively
anonymous
 one year ago
In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is ____ if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively

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Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2I'll attach my work okai ?

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2\[P _{total } = P _{Ne}+P _{He}+P _{Ar}\] Since we know the partial pressures of Helium and neum plus the total pressure we can find the partial pressure of Argon right? \[P _{Ar} = P _{total } (P _{He }+ P _{Ne})\] So u find it. We know: \[P _{Ar} = X _{Ar} * P _{total}\]In this equation we know the total pressure and the partial pressure of Argon so we can easily find the mole fraction. \[X _{Ar} = \frac{ P _{Ar} }{ P _{total} }\]
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