Answer: 18 moles of [tex]H_2O[/tex] will be produced.
Explanation:
We are given:
Moles of ammonia = 12 moles
The given chemical equation follows:
[tex]4NH_3+5O_2\rightarrow 4NO+6H_2O[/tex]
By the stoichiometry of the reaction:
4 moles of ammonia produces 6 moles of water
So, 12 moles of ammonia will produce = [tex]\frac{6}{4}\times 12=18mol[/tex] of water
Hence, 18 moles of [tex]H_2O[/tex] will be produced.