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A 4.10 −g sample of a mixture of CaO and BaO is placed in a 1.00-L...

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Chemistry

A 4.10 −g sample of a mixture of CaO and BaO is placed in a1.00-L vessel containing CO2 gas at a pressure of 735 torr and atemperature of 26 ∘C. The CO2 reacts with the CaO and BaO, formingCaCO3 and BaCO3. When the reaction is complete, the pressure of theremaining CO2 is 155 torr .

Calculate the number of moles of CO2 that have reacted.

Calculate the mass percentage of CaO in the mixture.

Answer & Explanation Solved by verified expert
4.4 Ratings (743 Votes)
Given P 735 torr 735 760 atm 0967 1atm 760 torr V 1L T 26C 26273 299 K we use PV nRT to get moles of CO2 n 0967 atm x 1L n x 008206 liter atmmolK x 299 K    See Answer
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