Question

which of these elements is found in both carbohydrates and water? carbon oxygen nitrogen helium

Explanation:

• Carbohydrates have the general formula \(C_x(H_2O)_y\), so they contain carbon (\(C\)), hydrogen (\(H\)), and oxygen (\(O\)).
• Water has the formula \(H_2O\), so it contains hydrogen (\(H\)) and oxygen (\(O\)).
• Carbon (\(C\)) is only in carbohydrates, not in water.
• Nitrogen (\(N\)) is not in either carbohydrates or water.
• Helium (\(He\)) is a noble gas and not in either.

Answer:

B. oxygen