Chemical formula
Molecular formula

Molecular formulae simply indicate the numbers of each type of atom in a molecule of a molecular substance. They are the same as empirical formulae for molecules that only have one atom of a particular type, but otherwise may have larger numbers. An example of the difference is the empirical formula for glucose, which is CH O (ratio 1:2:1), while its molecular formula is C H O (number of atoms 6:12:6). For water, both formulae are H O. A molecular formula provides more information about a molecule than its empirical formula, but is more difficult to establish.
length_constraints:number_sentences[5]