O Macmillan Learning A mixture of solid calcium oxide, CaO, and solid barium oxide, BaO, weighing 3.145 g is added to a 2.00 L flask containing carbon dioxide, CO2, at 30 C. The CaO and BaO react completely with the carbon dioxide gas to form solid CaCO3 and BaCO3, respectively. Calculate the moles of CO consumed by the reaction if the initial pressure of CO gas was 0.796 atm and the final pressure of CO gas is 0.394 atm. 2 moles of CO: What is the mass percentage of CaO in the solid mixture? mass percent CaO: What is the mass percentage of BaO in the solid mixture? mass percent BaO: mol % of