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A mixture of CaO(s) and BaO(s) weighing 5.14 g is added to a 1.50 L container...

A mixture of CaO(s) and BaO(s) weighing 5.14 g is added to a 1.50 L container containing carbon dioxide gas at 750.2 torr and 30.2ºC. The oxides react with CO2 to form the metal carbonate, and at the completion of the reaction, the pressure of CO2 is 230.7 torr. What was the mass of calcium oxide in the original mixture?

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