NH3 is produced according to the following reaction
Hello,
NH3 is the formula of Ammonia. It is produced in industries on large scale by the process called Haber Process.
The reaction for production of Ammonia is One Molecule of Nitrogen with Three Molecule of Hydrogen Gives Two Molecules Ammonia.
The Reaction is as followed -
N2 + 3H2 = 2NH3.
Hope this was helpful