If total pressure is 3 atm and mole fraction of gas A is 0.6, what is Pa?

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Multiple Choice

If total pressure is 3 atm and mole fraction of gas A is 0.6, what is Pa?

Explanation:
Partial pressure is determined by multiplying the mole fraction of a gas by the total pressure. So for gas A, Pa = x_A × P_total = 0.6 × 3 atm = 1.8 atm. The other values would require different mole fractions (for example, 0.9 atm would correspond to x_A = 0.3, 2.4 atm to x_A = 0.8, and 3.0 atm would mean A is the only gas present with x_A = 1).

Partial pressure is determined by multiplying the mole fraction of a gas by the total pressure. So for gas A, Pa = x_A × P_total = 0.6 × 3 atm = 1.8 atm. The other values would require different mole fractions (for example, 0.9 atm would correspond to x_A = 0.3, 2.4 atm to x_A = 0.8, and 3.0 atm would mean A is the only gas present with x_A = 1).

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