The Heat of Solution of Ammonium Chloride Is 15

Multiple Choice

The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.134-g sample of NH₄Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the final temperature of the solution? The specific heat of water is 4.18 J/g·°C and the heat capacity of the calorimeter is 365 J/°C.

A) 27.1°C
B) 18.6°C
C) 19.7°C
D) 21.8°C
E) 30.4°C