SOLVED:Zinc metal reacts with hydrochloric acid according to the balanced equation: Zn(s) 2 HCl(a q) ⟶ZnCl2(a q) H2(g) When 0.103  g of Zn(s) is combined with enough HCl to make 50.0  mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.5^∘ C to 23.7^∘ C . Find ΔHrxn for this reaction as written. (Use 1.0  g / mL for the density of the solution and 4.18  J / g · ^∘ C as the specific heat capacity.