if the reaction to form water were written h2(g)+12o2(g)→h2o(g) h 2 ( g ) + 1 2 o 2 ( g ) → h 2 o ( g ) , would you expect the same value of δh δ h as in equation 2h2(g)+o2(g)⟶2h2o(g)δh=−483.6kj 2 h 2 ( g ) + o 2 ( g ) ⟶ 2 h 2 o ( g ) δ h = − 483 .6 k j ?