What is the activation energy of a process whose rate is observed to increase by afactor of four when the temperature is increased from room temperature (20 C) to 80 C? (5 pts) A first order chemical reaction is found to have an activation energy (Ea) of 310 kJ/mole and a frequency factor (A) of 2.4 x 1014 s 1. (a) (b) Determine the rate constant at T = 750 C. (5 pts) What fraction of the reaction will be completed at 800 C in a period of 15 minutes (5 pts) (c) At what temperature will the reaction be three times as fast as at 750 C? (5 pts)