posted by Julia .
One reaction of iron with hydrochloric acid is represented by the following thermochemical equation.
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g); ΔH°= –87.9 kJ
How much heat is liberated at constant pressure if 0.416 g of iron reacts with 42.0 mL of 0.457 M HCl?
A. 87.9 kJ
B. 4.03 kJ
C. 0.844 kJ
D. 0.655 kJ
E. 36.6 kJ
Answered below at your other post.