Oberflächenspannung
Where ΔvapU is the energy of vaporization, NA is Avogadro's number, and a2 is the surface area per molecule. This equation also implies that the energy of vaporization affects surface tension. It is known that the stronger the force, the higher the energy of vaporization. Surface tension can then be used to calculate surface energy (uσ). An equation describing this property is: