If I have an unknown quantity of Xenon gas at a pressure of 0.687atm, a volume of 18.1 liters, and a temperature of 35°C, how many moles of gas do I
have? Write your answer to 3 significant figures.

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?