When solid CaCO3 is heated, it decomposes to give solid CaO and CO2 gas. A volume of 425 m...

When solid CaCO3 is heated, it decomposes to give solid CaO and CO2 gas. A volume of 425 mL of gas is collected over water at a total pressure of 758 mmHg and 16 °C. The vapor pressure of water at 16 °C is 14 mmHg.

a. What was the partial pressure of the CO2 gas?

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b. How many moles of CO2 gas were in the CO2 gas sample?