What quantity of CaCO3 (limestone) on heating will give 112g of CaO?

mols CaCO3 = 25.9/molar mass CaCO3.

mols CaO = same as mols CaCO3 according to the balanced equation.
g CaO = mols CaO x molar mass CaO. This is the theoretical yield(TY). The actual yield (AY) is 12.6g
%yield = (AY/TY)*100 = ?

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