Question

In photosynthesis, carbon dioxide (CO2) and water (H2O) combine to form the sugar glucose (C6H12O6) in the following reaction:

6CO2 + 6H2O → C6H12O6 + ?

Assuming this equation is balanced, which part is missing from the product side?

(1 point)
Responses

12 oxygen atoms
12 oxygen atoms

12 hydrogen atoms
12 hydrogen atoms

6 carbon atoms
6 carbon atoms

6 oxygen atoms
6 oxygen atoms
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Answer 1

12 oxygen atoms — the products include 6 O2 molecules (6 × O2 = 12 oxygen atoms), so the balanced equation is 6CO2 + 6H2O → C6H12O6 + 6O2.