CO2
6 compounds have this formula on CompoundList.
- Molar mass
- 44.01g/mol
- Monoisotopic mass
- 49.0017Da
- Atoms
- 3
- Elements
- 2
- Rings plus double bonds
- 2
The formula CO2 describes a molecule made of 1 carbon atom and 2 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 127.29%12.011 × 1 = 12.011 g/mol
- O Oxygen × 272.71%15.999 × 2 = 31.998 g/mol
Compounds with the formula CO2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 6 of 6 compounds
Frequently asked questions
What is the molar mass of CO2?
The molar mass of CO2 is 44.01 g/mol, calculated from standard atomic weights for 1 carbon atom and 2 oxygen atoms. The monoisotopic mass is 49.0017 Da.
How many compounds have the formula CO2?
CompoundList lists 6 compounds with the molecular formula CO2, including Carbon dioxide, Carbon dioxide-18O2, Methane(~17~O_2_)dione. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of CO2?
CO2 has a degree of unsaturation of 2. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.