When solid caco3 is heated it decomposes to give solid cao, Ask an Expert

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When solid CaCO3 is heated, it decomposes to give solid CaO and CO2 gas. A volume of 285mL of gas is collected over water at a total pressure of 730mmHg and 16 °C. The vapor pressure of water at 16 °C is 14 mmHg.
CaCO3(s)→CaO(s)+CO2(g)
What was the partial pressure of the CO2 gas and how many moles of CO2 gas were in the CO2 gas sample?

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