The Heat of Solution of Ammonium Chloride Is 15 $\circ$ C, What Is the Minimum Temperature Reached by the Solution

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 ^$\circ$ C, what is the minimum temperature reached by the solution (The specific heat of water = 4.18 J/g· ^$\circ$ C; the heat capacity of the calorimeter = 365. J/ ^$\circ$ C.)

A) 18.6 ^$\circ$ C
B) 19.7 ^$\circ$ C
C) 21.9 ^$\circ$ C
D) 27.1 ^$\circ$ C
E) 30.4 ^$\circ$ C