What part of the chemical equation tells the number of atoms of each element?

What part of the chemical equation tells the number of atoms of each element?
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That depends on the nature of the reaction. For a typicalreaction, it will be the subscript following the symbol of theelement multiplied by the coefficient. For example, in Na2SO4 therewill be 2 Na atoms, 1 S atom and 4 O atoms. If the reaction was 2Na2SO4, there would be 4 Na atoms, 2 S atoms and 8 O atoms.
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