How many units of 32 percent N in one gallon?

To find the number of units of 32 percent nitrogen (N) in one gallon, you need to calculate the total weight of nitrogen in that gallon. One gallon of water weighs approximately 8.34 pounds. Thus, 32 percent of 8.34 pounds is about 2.67 pounds of nitrogen. Therefore, there are 2.67 pounds of nitrogen in one gallon of a 32 percent N solution.