A coffee cup calorimeter initially contains 125g water at 24.28C. Potassium bromide (10.5 g), also at 24.28C, is added to the water, and after the KBr dissolves, the final temperature is 21.18C. Calculate the enthalpy change for dissolving the salt in J/g and kJ/mol. Assume that the specific heat capacity of the solution is 4.18J 8C₂ + g21 and that no heat is transferred to the surroundings or to the calorimeter.