A 50 pound bag of 13-13-13 would contain how many pounds of nitrogen?

To determine how many pounds of nitrogen are in a 50-pound bag of fertilizer labeled 13-13-13, we need to understand what the numbers on the fertilizer bag represent. The three numbers indicate the percentage by weight of nitrogen (N), phosphorus (P), and potassium (K) respectively. In this case, each number is 13, which means the bag contains 13% nitrogen, 13% phosphorus, and 13% potassium.

To calculate the amount of nitrogen in a 50-pound bag, you'll apply the percentage to the total weight of the bag:

1. Convert the percentage of nitrogen to a decimal: 13% = 0.13.
2. Multiply the total weight of the fertilizer bag by this decimal: 0.13 x 50 = 6.5.

Thus, a 50-pound bag of 13-13-13 fertilizer contains 6.5 pounds of nitrogen, which corresponds to the correct answer. This calculation highlights the relationship between the percentage provided on the label and the actual weight of the nutrient contained in the entire bag.