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What should be changed while balancing a chemical equation?

Answer and explanation

Correct answer: Coefficients

While balancing a chemical equation, only the coefficients written before formulae are changed. This makes the number of atoms of every element equal on the reactant and product sides, satisfying the law of conservation of mass. For example, the 2s in \(2H_2 + O_2 \rightarrow 2H_2O\) are coefficients. Changing a subscript is not allowed because changing \(H_2O\) to \(H_2O_2\) changes water into a different substance.

Related tags

Chemical EquationsBalancing EquationsCoefficientsConservation Of MassClass 10 Science

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