calculate the δh∘ for this reaction using the following thermochemical data: ch4(g)+2o2(g)⟶co2(g)+2h2o(l) δh∘=−890.3kj c2h4(g)+h2(g)⟶c2h6(g) δh∘=−136.3kj 2h2(g)+o2(g)⟶2h2o(l) δh∘=−571.6kj 2c2h6(g)+7o2(g)⟶4co2(g)+6h2o(l) δh∘=−3120.8kj

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "*-9" was replaced by "*(-9)".

Final Result :

    -432

Processing ends successfully

hope this helped :)

wellit can be

Explanation:

idk some do some don't i only get help here