(5 pts) The heat of formation of A(s) is (Hf)=100kJ/mol; heats of solution of A in a solvent B are As(r=30molB/molA)=20kJ/mol and Hs(r=)=25kJ/mol. a. What is the standard heat of formation of A( soln, r=30) relative to B and the elements of A(s) ? b. What is Af for A( soln, r=) relative to B and the elements of A(s) ? c. What is the enthalpy ( kJ/molA ) of a solution of A in B at 25C for which r=30, relative to B and the elements of A at 25C ? d. What is the enthalpy (kJ) of a solution containing 5mol of A in 150mol of B at 25C, relative to A(s) and B(I) at 25C ? What is it relative to B(I) and the elements of A at 25C