1. The problem statement, all variables and given/known data The HCl (hydrochloric acid) molecule has a dipole moment of about 3.4x10-30 C.m. The two atoms are separated by about 1.10-10 m. What is the net charge on each atom? What is maximal torque that this dipole will experience in a 5.104 N/C electric field? How much energy one would need to rotate one molecule 45o from its equilibrium orientation? 2. Relevant equations A) Can't figure out which formula to use to find the net charge B) τ = P X E C) Not sure about this one: W = ΔU = U45° - U0° = - PE Cos45° - (- PE Cos 0°) NOTE: For B, I am assuming that the initial angle is 0° to make my life easier since the information is not provided 3. The attempt at a solution A) Can't figure out which formula to use to find the net charge B) 3.4 X 10 -30 Cm χ 5 X 104 N/C = 2.3 X 10-27 Nm, or Joules C) (-2.3 X 10-27J X cos 45°) + 2.3 X 10-27J = -1.626 X 10-27J + 2.3 X 10-27J = 6.74 X 10-28J Does that make sense for B and C? And could you give me any pointers for A? Thank you!