If the following elements were to combine with each other, choose which demonstrate the law of multiple proportion. select all that apply. z: x = 7: 1 a: z = 2.5: 1 a: z = 2.2: 1 y: x = 11: 1

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?