Define a balanced chemical equation. Why should an equation be balanced?
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A chemical equation needs to be balanced because a chemical reaction is just a rearrangement of atoms. Atoms themselves are neither created nor destroyed during the course of a chemical reaction. The chemical equation needs to be balanced to follow the law of conservation of mass.
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A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
We should balance a equation so that the number of molecules and atoms are same in both sides. Also any atom or molecules is not wasted in the chemical equation.
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