Enzymes in Plants Convert Nitrate into Ammonia $\rightarrow$ NO₂ -(Aq) + OH^-(aq)
A)1
B)2
C)3
D)4
E)5

Enzymes in plants convert nitrate into ammonia.The unbalanced half-reaction equation is given below.What is the stoichiometric coefficient of the electrons, e-, in the balanced reaction equation?
NO₃ -aq) +H₂O(l) + e^- $\rightarrow$ NO₂ -(aq) + OH^-(aq)

A) 1
B) 2
C) 3
D) 4
E) 5