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 0.112 gg of Zn(s)Zn(s) is combined with enough HClHCl to make 53.9 mLmL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.4 ∘C∘C to 24.7 ∘C∘C. ind ΔrHΔrH  for this reaction as written. (Use 1.0 gmL−1gmL−1  for the density of the solution and 4.184 Jg−1∘C−1Jg−1∘C−1 as the specific heat capacity.) Express your answer in kilojoules per mole to two significant figures.

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".