Adenosine triphosphate is composed of the nitrogenous base adenine, the five-carbon sugar ribose, and three phosphate groups. Then calculate the free energy of ATP hydrolysis to ADP at 37 C, 1 bar, given ArG(25 C) = -31.0 kJ/mol ATP + H20 ADP + inorganic phosphate (Pi) + free energy 1 Solve this problem by using entropy. Ars(25 C) = 22.47 J/mol/K. 2 Solve this problem by using the enthalpy (Gibbs-Helmholtz) method. ArH(25 C) = -24.3 kJ/mol. 3 What is the key assumption made when using these methods? 4 What is the equilibrium constant of ATP hydrolysis at 37 C?