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# Empirical Formula Calculator

The Empirical formula of a compound may be defined as the formula which gives the simplest whole number ratio of atoms of the various elements present in the molecule of the compound.

Empirical formulas are also called simple formulas. The formulas of all ionic compounds are empirical formulas. Since ionic compounds do not exist as molecules, their formulas are not molecular formulas.

For example the empirical formula of the compound glucose (C6H12O6) is CH2O which shows that C, H and O are present in the simplest ratio of 1:2:1.

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## Calculating Empirical Formula

$n = \frac{Molecular\ Weight}{Empirical\ formula\ Weight}$