What is the chemical formula for carbon dioxide?

The chemical formula for carbon dioxide is represented as CO2. This indicates that each molecule of carbon dioxide consists of one carbon atom (C) bonded to two oxygen atoms (O). Understanding the composition of carbon dioxide is essential because it is a significant greenhouse gas with implications for environmental science and technology.

The notation CO2 clearly signifies that there are two oxygen atoms for every one carbon atom, which is crucial for defining the properties and reactivity of carbon dioxide in various chemical processes. This formula helps explain the behavior of carbon dioxide in natural and industrial contexts, such as its role in photosynthesis, respiration, and combustion.

In contrast, the other options do not accurately represent carbon dioxide. For instance, C2O suggests a compound with two carbon atoms and one oxygen atom, which does not align with the characteristics of carbon dioxide. Similarly, CO indicates carbon monoxide, which contains one carbon atom and one oxygen atom, while O2C misrepresents the ratio of the elements involved. Recognizing the accurate representation of chemical compounds is fundamental in gas technology and environmental studies.