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 = 4.20 ✕ 1012 rad/s. what is the rotational kinetic energy of one molecule of cl2, which has a molar mass of 70.0 g/mol?