delta G and potential energy diagrams

consider a hypothetical euilibrium that exists betwee compounds A and B at room tempretures. The activation energy for the forward reaction is (conversion of A to B) is 22 KJ/ mol. Likewise, the activation energy for the reverse process has been determined to be 34 KJ/mol.

calculate the delta G for the forward reaction and construct a potential energy diagram for the conversion of A to B. Be sure to place the transition state in accordance with the Hammond Postulate. 

b. A flask containing a mixture of A and B at equilibrium was discovered, and the concentration of A at room tempreture was determined experimentally to be 3.1X10^-2 mol/L. What is the concentration of B?