My chemistry textbook does not handle this topic well. So I hope someone here can help me a little bit
N2 + H2 ----> NH3
After the reaction there is n(N2)=2mol n(H2)=2mol n(NH3)=2mol
Question: What are the ratios of the amount of substances before the reaction?
Answer: n(N2)=3mol n(H2)=5mol
I appreciate a lot if someone could explain verbally how to proceed when doing this kind of exercise