The notation "2CO₂" represents two molecules of carbon dioxide (CO₂). In this molecular formula:
- "C" stands for carbon.
- "O" stands for oxygen.
- The subscript "2" indicates that there are two oxygen atoms for every carbon atom in the molecule.
Therefore, two molecules of carbon dioxide consist of 2 carbon atoms and 4 oxygen atoms in total. Carbon dioxide is a colorless gas that is naturally present in Earth's atmosphere and is produced by respiration, combustion of organic materials, and many industrial processes. It plays a significant role in the carbon cycle and is an important greenhouse gas.
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