If you prepare a 1.00 m solution of NH_4ClO_4 beginning with water at 23.5 degrees C, what is the final temperature of the solution (in degrees C)?

If you prepare a 1.00 m solution of NH_4ClO_4 beginning with water at 23.5 degrees C, what is the final temperature of the solution (in degrees C)? Assume that the specific heats of both pure H_2O and the solution are the same, 4.18 J/ K*g.