1. The problem statement, all variables and given/known data The rate of a reaction at 100˚C is four times the rate at 50˚C. What is its activation energy? (A) 1152 kJ. mol-1 (B) 80.1 kJ. mol-1 (C) 54.0 kJ. mol-1 (D) 27.8 kJ. mol-1 2. Relevant equations k=e-Ea/RT 3. The attempt at a solution I plugged in the activation energies into the equation to see the changes in rate at different temperatures, but I can't solve for the one that is 4x the rate at 100 degrees.