To calculate the BODL (Biochemical Oxygen Demand at the Limit of Solubility) of C4H8O2N2, we first need to determine the amount of oxygen that would be consumed during the complete biodegradation of the compound.If the compound is 80% biodegradable, then the remaining 20% will not be biodegraded and will contribute to the BODL. Therefore, the BODL will be equal to the BOD of the unbiodegraded portion of the compound plus the oxygen demand of the biodegraded portion.