Part A

What is the final temperature in a squeezed cold pack that contains $46\mathrm{.}0g$ of $N{H}_{4}N{O}_3$ dissolved in $125mL$ of water? Assume a specific heat of $4\mathrm{.}18\frac{J}{g*C}$ for the solution, an initial temperature of $26\mathrm{.}0C,$ and no heat transfer between the cold pack and the environment.