`Delta H` and `Delta U` for the reaction,
`2S_((s))+3O_(2(g)) to 2SO_(3(g))`, are related as _______ .

Delta H- Delta U for the reaction C_3H_8(g) +SO_2 (g) = 3CO_2 (g) + 4H_2O (g) .

Heat of formation of H_(2)O_((g))" at "25^(@)C is -243 kJ. Delta U for the reaction H_(2(g))+(1)/(2) O_(2(g)) rarr H_(2)O_((g))" at "25^(@)C is

The following two reactions are known Fe_(2) O _(3 (s)) + 3 CO _((g )) to 2 Fe _((s)) +3 CO _(2 (g)) , Delta H =- 26.8 kJ//mol FeO _((s)) + CO _((g)) to Fe _((s)) +CO _(2 (g)), Delta H =- 16.5 kJ//mol The value of Delta H for the following reaction Fe _(2) O _(3 (s)) + CO _((g)) to 2 Feo_((s)) + CO _(2 (g)) is