Calorimeter question...pleas help!?

Question

In a coffee-cup calorimeter, 62.1 mL of 0.100 M AgNO3 and 62.1 mL of 0.100 M HCl are mixed to yield the following reaction.

Ag+(aq) + Cl -(aq) AgCl(s)

The two solutions were initially at 22.60°C, and the final temperature is 23.39°C. Calculate the heat that accompanies this reaction in kJ/mol of AgCl formed. Assume that the combined solution has a mass of 124.2 g and has a specific heat capacity of 4.18 J/°Cg.

Answer 1

124.2 x 4.18 x (22.6-23.39)/(0.062 x 0.1)

Note that the answer will come out negative, deliberately, since the reaction is exothermic.