(this problem has multiple steps) please help with all parts

A catalyst decreases the activation energy of a particular exothermic reaction by 29 kJ/mol, to 28 kJ/mol. Assuming that the mechanism has only one step, and that the products are 35 kJ lower in energy than the reactants, sketch approximate energy-level diagrams for the catalyzed and uncatalyzed reactions What is the activation energy for the uncatalyzed reverse reaction? Answer: What is the rate constant at 310 K? (Use SI units. For example, use seconds not minutes or hours.) Answer: What is the rate constant at 315K? Answer: What is the activation energy in J/mol)