Determining Chemical Formulas
In chemistry, chemical formulas are for compounds as are IDs for humans.
The formula of a compound that states the actual number of each kind of atom found in one molecule of the compound is the molecular formula of that compound.
The formula of a compound that expresses the smallest whole number ratio of the atoms present is the empirical formula of that compound.
REMEMBER: IONIC FORMULAS ARE ALWAYS EMPIRICAL FORMULAS
From Molecular to Empirical Formula
To transform a molecular formula to an empirical formula, one must remove the common factor whilst maintaining whole numbers.
C6H12O6 -> CH2O The common ratio of 1:2:1 is maintained and reduced.