darricke19 darricke19 07-02-2017 Chemistry contestada To determine the mass of CO2 that forms from a given mass of CaCO3, which of the following must be known? Check all that apply. (Which do I choose?) -molar mass of CaCO3 -molar mass of CaO -mole ratio of CaCO3 to CO2 -mole ratio of CaO to CO2 -molar mass of CO2 -mass of CaO formed