1. The problem statement, all variables and given/known data How would I calculate the force felt by a a mole of liquid water molecules (due to the fact that H2O is a dipole molecule) if a say -5.00 * 10-11 C charge is placed 1 cm from the water molecules? 2. Relevant equations I think I am going to have to use dyebyes:http://en.wikipedia.org/wiki/Debye" [Broken], and water vapor has 1.85 dyebye units. 3. The attempt at a solution I do not know how to use dyebye units or if water vapor has the same amount of dyebye units as liquid water.