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Mendeleev · Reaction

Calcium carbonate decomposition

Calcium carbonate decomposition: balanced equation with an atom-by-atom conservation check.

Reaction
CaCO3 → CaO + CO2
ElementLeftRight
C11
O33
Ca11

Coefficients in front of formulas set the reaction proportions. They do not change the chemical formulas themselves.

An equation is balanced when every element has the same total number of atoms on the left and on the right.