5.

NH4NO3 (s) -> NH4+ (aq) + NO3- (aq) ΔH = +26.6 kJ/mol

What is the final temperature of a solution if 10.00 grams of solid ammonium nitrate is dissolved in 120.0 grams of water. Assume that the solid and water are both initially at 20.0 oC and that the specific heat capacity of the solution is 4.18 J/g oC. The coffee cup calorimeter used for this lab has a heat capacity of 56.2 J/oC. What would be the final temperature of the solution?