[Students: Please create yourself a little Excel sheet for calculating AFS and HFS. These are sort of tedious calculations that you will have to do many times]. Just underneath the fresh litter-layer on the forest floor of a Spodosol, is an O horizon that is 2.2 inches thick. This O horizon is dominated by well-decomposed soil organic matter (SOM), and the SOM content of this O horizon is 92.2 % by weight. Further data indicate this soil organic matter contains 5.3 % nitrogen (N) by weight. What is the approximate weight (in pounds N) of nitrogen in the organic matter of the AFS for this O horizon that is 2.2 inches thick, with a bulk density of 0.52 grams per cm3 (43,560 square feet per acre, 62.4 pounds per cubic foot of water)