Assuming that the value of AH and AS do not change with temperature, and using the following data: S(s.rhombic) = AH = 0 kJ/mol, S = +31.88 J/molK, Og.H = 0 kJ/mol, S = +205.0 molK, OgH = 395.2 kJ/mol, S = 256.2 molK. Calculate the value for the free energy change, AG, for the reaction.