Empirical Formulas Three Steps for solving From the experimentally determined weight composition of a compound, find the number of moles of atoms. Divide the number of moles of each element by the smallest number of moles. Assign the relative number of atoms of each element by substituting the number of moles of atoms. Molecular Formula In Ionic compounds, the empirical formula indicates the proportions of elements in the compound. Formula for a molecular compound is the molecular compound.
Molarity Describes the concentration of a solution in moles per liter.