A Mixture of Xe, Kr, and Ar Has a Total

question 143

Multiple Choice

A mixture of Xe, Kr, and Ar has a total pressure of 6.70 atm. What is the mole fraction of Kr if the partial pressures of Xe and Ar are 1.60 atm and 2.80 atm, respectively.

• A)0.174
• B)0.256
• C)0.343
• D)0.481
• E)0.570

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