Which of the following nitrogen-containing compounds would supply the most nitrogen per gram of fertilizer?
a. iron azide, Fe(N3)2, MW = 140 g/mol
b. sodium azide, NaN3, MW = 65 g/mol
c. potassium nitrite, KNO2, MW = 85.1 g/mol
d. potassium azide, KN3, MW = 81.1 g/mol
e. There is not enough information to answer this problem