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Answer :
Final answer:
The mole fraction of Ar is calculated by dividing the partial pressure of Ar by the total pressure of the gas mixture, which is 1.50 atm / 4.10 atm, resulting in a mole fraction of approximately 0.366 or 36.6%. Therefore correct answer is B.
Explanation:
The mole fraction of Ar can be calculated by using the formula XAr = PAr/Ptotal, where PAr is the partial pressure of argon, and Ptotal is the total pressure of the gas mixture. In this case, the partial pressure of argon is 1.50 atm and the total pressure is 4.10 atm. Therefore, the mole fraction of Ar is 1.50 atm / 4.10 atm, which equals approximately 0.366 or 36.6%.
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