A chemical formula for a compound existing as discrete molecules that gives the total number of atoms of each element in a molecule the molecular formula for water is H2O see structural formula compare empirical formula. Compare with empirical formula structural formula Special kinds of chemical formulas called molecular formulas are used to represent the kinds of atoms and the number of each kind of atom in a molecule. A chemical formula showing the ratio of elements in a compound rather than the total number of atoms.
The Simplest Molecular Equation The molecular formula of a compound lists all its component elements and the number of atoms each element contains.
A chemical formula that shows the number and kinds of atoms in a molecule. A formula or expression obtained from experimental data rather than theory. Thus the empirical formula of acetic acid is CH 2 O and its molecular formula is C2H402 or twiceTCH 2 O. An expression which states the number and type of atoms present in a molecule of a substance.