A mixture of CaCO3(s) and Cao(s) weighing 0.808 g was heated. The evolved CO2(g) of 180 mL is collected over water at 26 C and a barometric pressure of 410 mmHg. Vapor pressure of water at this temperature is 25.2 mmHg, calculate the mass percent of Cao(s) in the original mixture. O a. 57% O b. 51% O c. 61% O d. 54% O e. 64%