i nee help in this question any help would be appreciated the question is

Question

1.Given the reaction:
A(g) + 2 B(g) ---> C(g) + D(g) ��H = -40 KJ,
a. If the activation energy in the forward direction is 80KJ, plot the PE
diagram.
b. Plot a KE distribution diagram in which about 10% of the molecules will
meet or exceed the activation energy

Thank you