Answer:
- 7 g
Explanation:
Balancing of Nitrogen is a measure that deals with the difference between nitrogen intake and nitrgen loss
Nitrogen Balance = Nitrogen intake - Nitrogen loss
Given that
the nitrogen intake = 13 g and
the nitrogen loss= 21 g
Therefore nitrogen balance = nitrogen intake - nitrogen loss
= (13 - 21)g = -7 g
Thus, there is a negative nitrogen balance, meaning that the amount of nitrogen excreted from the body is greater than the amount of nitrogen ingested.
