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Answer: A chemical equation is a substance-based representation of a chemical process. The number of atoms in all of the molecules in a balanced chemical equation is equal on both sides of the equation.
The Law of Conservation of Mass governs the balancing of a chemical equation.
Mass cannot be created or destroyed in a chemical reaction, and the total mass of atoms or molecules on the reactant side should equal the total mass of elements or molecules on the product side.
If the chemical equation is unbalanced, the law of conservation does not apply.
