How many grams of CO2 is produced by this reaction? Equation- CaCO3+2HCl---CO2+H2O+CaCl2

Question

My sample of chalk(CaCO3) was 2.65 g or 0.0265 moles

I previously found the number of moles of HCl that are required to react with the number of moles of CaCO3 contained in my sample to be 0.053 moles.

Answer 1

Since the CO2 and CaCO3 have the same coefficient in the balanced equation (actually it is 1, the standard convention when not written), the moles of CO2 will also be 0.0265. The molar mass of CO2 is 44.0 (12.0 + 2(16.0)), using 3 significant figures, as given. So moles X g/mole = 0.0265 X 44.0 = 1.166 g, and round to 1.17 g.