When a 4.25g sample of solid ammonium nitrate dissolves in 60 g of water in a coffee cup calorimeter,the temperature drops from 22 oC to 16.9oC. Calculate the ΔH(in KJ/mol and also the ΔH in Kj/g NHΔ4NO3) for the solution process.Assume the specific heat of the solution is the same as of taht of pure wate which is ΔH=4.18j/g.K)?