The total mass of the products would be 15 grams. This can be determined by looking at the balanced chemical equation, which states that 1 mole of CaCO3 will produce 1 mole of CO2 and 1 mole of CaO. The molar mass of CaCO3 is 100 g/mol, so 30 grams of CaCO3 is equal to 0.3 moles. Therefore, we would expect to produce 0.3 moles of CO2 and 0.3 moles of CaO. The molar mass of CO2 is 44 g/mol, so 0.3 moles of CO2 would have a mass of 13.2 grams. Similarly, the molar mass of CaO is 56 g/mol, so 0.3 moles of CaO would have a mass of 16.8 grams. Adding these two masses together, we get a total mass of 13.2 grams + 16.8 grams = 30 grams, which is the total mass of the products.
