Question

Calculate the amount of CO2 formed when 50 grams of CaCO3 decomposes?

Answer 1

CaCO3 ==> CaO + CO2

mols CaCO3 = grams/molar mass.
Using the coefficients in the balanced equation, convert mols CaCO3 to mols CO2.
Now convert mols CO2 to grams. g = molls x molar mass.