Answer :
Final answer:
The left side of the equation has 2 carbon atoms and 6 hydrogen atoms, while the right side has 2 carbon atoms, 6 hydrogen atoms, and 7 oxygen atoms. To balance the equation, we need to add 6 more oxygen atoms on the left side.
Explanation:
The left side of the equation has 2 carbon atoms and 6 hydrogen atoms. On the right side, there are 2 carbon atoms, 3 water molecules (which contain 6 hydrogen atoms), and a certain number of oxygen atoms represented by the question mark. To balance the equation, we count the oxygen atoms on the right side, which gives us a total of 7 oxygen atoms. Since there is already 1 oxygen atom on the left side, we need 6 more in the form of O₂, which requires three oxygen molecules.
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