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In a balanced chemical equation, how does the number of atoms of each element compare in the reactants and products?

Answer and explanation

Correct answer: Equal on both sides

A balanced chemical equation follows the law of conservation of mass. Therefore, the number of atoms of each element is equal on the reactant and product sides. For example, in \(2H_2 + O_2 \rightarrow 2H_2O\), both sides have 4 hydrogen atoms and 2 oxygen atoms. It is not enough for only the total number of atoms to match; each element must be balanced separately.

Related tags

ScienceClass 10Chemical ReactionsBalanced EquationsConservation Of MassAtoms

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