We are asked to calculate the number of moles of CO2 that have reacted.
Calculate initial moles CO2:
P = 735 torr = 0.967 atm
T = 26 oC +273.15 = 299.15 K
V = 1 L
R= 0.08206 L-atm/mol-K
A 3.90-g sample of a mixture of CaO and BaO is placed in a 1.00-L vessel containing CO2 gas at a pressure of 735 torr and a temperature of 26 oC. The CO2 reacts with the CaO and BaO, forming CaCO3 and BaCO3. When the reaction is complete, the pressure of the remaining CO2 is 155 torr .
Calculate the number of moles of CO2 that have reacted.
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