chemistry

I've just realised how much high school chemistry I've still got floating in my head nearly 30 years later. No answers but here's the logic:

Work out how many moles of CO2 there are before the reaction (you have volume and temperature)

Then work out how many moles of CO2 are left after the reaction - the difference in CO2 moles is how many moles of CaO+BaO there are (it's a one to one reaction in both cases to combine with the CO2 and form the carbonates).

Then find the ratio of CaO to BaO (by figuring out there molecular masses) that would create enough moles of both to equal the number of moles of CO2 in the reaction.

Assume all the CaO and BaO was converted because not all the CO2 was.