1. The problem statement, all variables and given/known data In a crude model of a rotating diatomic molecule of chlorine (Cl2), the two Cl atoms are 2.00 10^-10 m apart and rotate about their center of mass with angular speed ω = 3.80 10^12 rad/s. What is the rotational kinetic energy of one molecule of Cl2, which has a molar mass of 70.0 g/mol? 2. Relevant equations 1/2 * m * v2 (Kinetic Energy) v/2 * KB * T (Internal Energy of a molecule) 3. The attempt at a solution I attempted to use the equation for kinetic energy, substituting r * ω for v, but my web assign says that this is wrong. Nothing like this was taught in class and the book does not say much, so I'm at a loss for where to go.