Interpretation:
The reason for use of coefficients in mole ratios instead of subscripts needs to be explained.
Concept introduction:
The ratio of mass of substance to its molar mass is said to be number of moles of that substance.
The ratio of amount of any two compounds involved in a

Explanation of Solution
The coefficients in the balanced chemical equation represents the number(s) of particular substance involved in the reaction. Whereas the subscripts represent the number of atoms presents within a particular molecule. In a mole ratio, ratio of number of molecules consumed or formed in a reaction are used that’s why coefficients in mole ratios are used instead of subscripts.
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