One reaction of iron with hydrochloric acid is represented by the following thermochemical equation.
Fe(s) + 2HCL(aq)goes to FeCl2(aq) + H2(g)
Change in enthalpy is -87.9kJ. How much heat is liberated at constant pressure if .368 g of iron reacts with 18.8mL of 0.568 M HCl?