Question

A 7.30-L container holds a mixture of two gases at 45 °C. The partial pressures of gas A and gas B, respectively, are 0.342 atm and 0.527 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
Use PV = nRT and solve for P using n = total mols of all three gases.

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