Calculate the enthalpy change for the reaction C2H4(g) + H2(g) -> C2H6(g) from the following data: Show your work.
C2H4(g) + 3O2(g) -> 2CO2(g) + 2H2O(l) Delta H = -1411 kJ
C2H6(g) + 3.5O2(g) -> 2CO2(g) + 3H2O(l) Delta H = -1560 kJ
H2(g) + 0.5O2(g) -> H2O(l) Delta H = -285.8 kJ
