45.0gCaCO3 added to 1.25L of 25.7% w/v solution of HCl. A)Calc the theoretical yield of CO2 formed. B)Calc the volume of HCl solution required to produce 25.0gCO2 with rxn 78.0% efficient. Do we use the 25.7% to find the volume of HCl? Please help me by explaining this prob thanks!