Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)ZnCl2(aq)+H2(g)Zn(s)+2HCl(aq)ZnCl2(aq)+H2(g) When 0.125 gg of Zn(s)Zn(s) is combined with enough HClHCl to make 50.5 mLmL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.5 CC to 24.6 CC.

Part A Find rHrH for this reaction as written. (Use 1.0 gmL1gmL1 for the density of the solution and 4.184 Jg1C1Jg1C1 as the specific heat capacity.) Express your answer in kilojoules per mole to two significant figures.