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When a 4.25-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperature drops from 22.0 oC to 16.9 oC.
You may want to reference (Pages 179 - 183) Section 5.5 while completing this problem.
Calculate ΔH (in kJ/mol NH4NO3) for the solution process:
NH4NO3(s) → NH4+(aq) + NO3-(aq)
Assume that the specific heat of the solution is the same as that of pure water.
Is this process endothermic or exothermic?