Molar Mass of Carbon dioxide
CO2 — 44.009 g/mol, worked out element by element.
Molar mass of Carbon dioxide, CO₂
44.009 g/mol
Molecular weight 44.009 · 3 atoms per formula unit
Also known as: co2, carbonic anhydride.
The product of every complete combustion, and the gas whose molar mass sets the scale for greenhouse accounting.
How 44.009 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 2 | 15.999 | 31.998 | 72.71% |
| Carbon | 1 | 12.011 | 12.011 | 27.29% |
| Total | 3 | 44.009 | 100% |
M = 2 × 15.999 + 1 × 12.011 = 44.009 g/mol
Grams to moles for Carbon dioxide
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0227 mol | 1.368 × 10^22 |
| 10 g | 0.2272 mol | 1.368 × 10^23 |
| 25 g | 0.5681 mol | 3.421 × 10^23 |
| 50 g | 1.1361 mol | 6.842 × 10^23 |
| 100 g | 2.2723 mol | 1.368 × 10^24 |
| 250 g | 5.6807 mol | 3.421 × 10^24 |
| 44.009 g | 1 mol | 6.022 × 10^23 |
For any other amount, use the molar mass calculator, or the molarity calculator to make up a solution of a given concentration.
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Frequently Asked Questions
What is the molar mass of Carbon dioxide?
The molar mass of Carbon dioxide (CO2) is 44.009 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 2 × 15.999 + 1 × 12.011 = 44.009.
What is the molecular weight of Carbon dioxide?
44.009 — the same number as the molar mass, but as a dimensionless ratio rather than in g/mol. The two terms describe the same arithmetic, so a molecular weight of 44.01 and a molar mass of 44.01 g/mol are the same answer.
How many moles are in 100 g of Carbon dioxide?
100 ÷ 44.009 = 2.2723 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Carbon dioxide?
By mass, Carbon dioxide is 72.71% oxygen, 27.29% carbon. Each element's share is its total mass in the formula divided by 44.009.
How many atoms are in one formula unit of Carbon dioxide?
3: 2 oxygen, 1 carbon. One mole contains 6.02214076 × 10²³ formula units, so a mole of Carbon dioxide contains 3 × 6.022 × 10²³ atoms in total.