CO ( g ) H 2 ( g ) O 2 ( g ) ⟶ CO 2 ( g ) H 2 O ( g ) What is Δ H for the reaction above, given the following reaction enthalpies 2 C ( s ) O 2 ( g ) → 2 CO ( g ) Δ H 1 = − 222 kJ C ( s ) O 2 ( g ) → CO 2 ( g ) Δ H 2 = − 394 kJ 2 H 2 ( g ) O 2 ( g ) → 2 H 2 O ( g ) Δ H 3 = − 484 kJ