Nitric acid is neutralized with potassium hydroxide. HNO₃(aq)+KOH(aq)→KNO₃(aq)+H₂O(l), ΔH=−53.4kJ. 55.0mL of 1.30M solution of both reactants, at 21.4∘C, are mixed in a calorimeter. What is the final temperature of the mixture? Assume that the density of both solutions is 100 g/ml.