When a 3.88 g sample of ammonium nitrate dissolves in water to make 60.0 mL of solution in a coffee cup calorimeter, the temperature drops from 23.0 degree C to 18.4 degree C. Calculate DH in kJ/mol NH4NO3 for the solution process. Assume that the specific heat of the solution, Cs solution, is 4.18 J/g-C and the density of the solution is 1.00 g/mL. (You will need to find the molar mass of NH4NO3 to solve the problem. See pages 269-270 in Tro.)