A useful model of a water molecule is sketched in Figure P18.86, with point charges of a...

A useful model of a water molecule is sketched in Figure P18.86, with point charges of at the H sites and a point charge at the O site. The H–O bond length is and the bond angle is (a) What is the total electric potential energy of this model of a water molecule? (b) How much work would be required to completely disassociate the molecule?