1. Calculate the potential energy of the dipole-dipole interaction between 2 HF molecules oriented along the X axis in an XY coordinate plane whose area of positive charge is separated by 5.00 from the area of negative charge of the adjacent molecule. The dipole moment of the HF molecules is = 1.92 D (1 Debye = 3.336-10-30 C-m). Assume the molecules exist in vacuum with 0 = 8.8541878-10-12 CN-m.