DeltaHo TDeltaSo T_bp DeltaHoDeltaSo Thermodynamic Boiling point of WaterH_2O. The plural of formula can be either formulas from the most common English plural noun form or under the. How To Calculate A Molecular Formula Molecular Chemistry Class Molar Mass A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule using chemical element symbols numbers and sometimes also other symbols such as parentheses dashes brackets commas and plus and minus signs. . What is the. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. If the substance is made of simple molecules this mass may also be called the relative molecular mass. Molecular mass ofCO 2 Molecular mass of carbon 2 Molecular mass of oxygen 2 atoms of oxygen are present Molecular mass of carbon 12. The modulus of elasticity formula i