A nutritionist calculates the protein content of a food sample based on its nitrogen mass. What is the average percentage of nitrogen in proteins?
Q1. A nutritionist calculates the protein content of a food sample based on its nitrogen mass. What is the average percentage of nitrogen in proteins?
Answer: 16%
Explanation: Proteins typically contain approximately 16% nitrogen by mass. Option B is a common distractor but represents the percentage of other elements like hydrogen.