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QUESTION

When solid CaCO3 is heated, it decomposes to give solid CaO and CO2 gas. A volume of 735 m of gas is collected over water at a total pressure of 730...

When solid CaCO3 is heated, it decomposes to give solid CaO and CO2

 gas. A volume of 735 m of gas is collected over water at a total pressure of 730 mmHg and 16 ∘C

. The vapor pressure of water at 16 ∘C is 14 mmHg. 

CaCO3(s)→CaO(s)+CO2(g)

Part A

What was the partial pressure of the CO2

 gas?

Express your answer with the appropriate units.

PCO2 = 

Part B

How many moles of CO2 gas were in the CO2

 gas sample?

Express your answer with the appropriate units.

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