sallysumo sallysumo 29-01-2021 Chemistry contestada Please Help! :)Calcium carbonate decomposes to form carbon dioxide and calcium oxide: CaCO3(s) -------> CO2(g) + CaO(s) How many grams of calcium carbonate will be needed to form 3.45 liters of carbon dioxide at 740 mm Hg and 121 °C?