NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l)

How do I calculate the oxidation states of Nitrogen and figure out if it is reduced, oxidized or neither?

2 answers

http://www.chemteam.info/Redox/Redox-Rules.html
Thank you for the link! Here is my answer below. I am not sure if I am figuring it right. Please advise.

NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l)
N is -3,H3 is +1, 2o2 is 0,

H is +1, N is X ??, O3 is -2, H2O is -2

Therefore X=-2
I am not sure how to figure N. Is it X or is N include NO3?
and it is
Oxidized