1. Calcium oxide (quicklime) is made by heating calcium carbonate (limestone). calcium carbonale calcium oxide + carbon dioxide 1009 (a) 44 grams of carbon dioxide is produced when 100 grams of calcium carbonate is heated. Calculate the mass of calcium oxide produced when 100 grams of calcium carbonate is heated. mass __ g

The question is referring to the thermal decomposition reaction of calcium carbonate into calcium oxide and carbon dioxide.The given reaction is The molar masses of , , and are around 100g/mol, 56g/mol, and 44g/mol, respectively. With 100g heated, it represents 1 mole of . So the 44 grams of produced is 1 mole as well. Considering stoichiometry of the reaction, for each mole of , one mole of is produced. So to find the mass of calcium oxide produced, the molar mass should be considered, which is 56 grams. Thus, when 100 grams of calcium carbonate is heated, 56 grams of calcium oxide are formed.