for which one of the following reactions is the value of δh° rxn equal to δh° f for the product? n2 (g) + o2 (g) → 2no (g) 2h2 (g) + o2 (g) → 2h2o (g) h2o (l) + 1/2o2 (g) → h2o2 (l) 2h2 (g) + o2 (g) → 2h2o (l) none of the above

The eocs or end of course exams i believe

Anew dwarf planet hope this

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's.