If 6. 02 × 1023 molecules of n2 react according to the equation: n2 + 3 h2 → 2 nh3 the total number of molecules of nh3 produced is.

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. 

Where are the startments?

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