Molar Mass of Urea
CO(NH2)2 — 60.056 g/mol, worked out element by element.
Molar mass of Urea, CO(NH₂)₂
60.056 g/mol
Molecular weight 60.056 · 8 atoms per formula unit
Also known as: co(nh2)2, ch4n2o, carbamide.
How mammals excrete nitrogen, and the first organic compound synthesised from inorganic starting material.
How 60.056 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Nitrogen | 2 | 14.007 | 28.014 | 46.65% |
| Oxygen | 1 | 15.999 | 15.999 | 26.64% |
| Carbon | 1 | 12.011 | 12.011 | 20.00% |
| Hydrogen | 4 | 1.008 | 4.032 | 6.71% |
| Total | 8 | 60.056 | 100% |
M = 2 × 14.007 + 1 × 15.999 + 1 × 12.011 + 4 × 1.008 = 60.056 g/mol
Grams to moles for Urea
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0167 mol | 1.003 × 10^22 |
| 10 g | 0.1665 mol | 1.003 × 10^23 |
| 25 g | 0.4163 mol | 2.507 × 10^23 |
| 50 g | 0.8326 mol | 5.014 × 10^23 |
| 100 g | 1.6651 mol | 1.003 × 10^24 |
| 250 g | 4.1628 mol | 2.507 × 10^24 |
| 60.056 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 Urea?
The molar mass of Urea (CO(NH2)2) is 60.056 g/mol. That is the sum of the standard atomic weights of all 8 atoms in one formula unit: 2 × 14.007 + 1 × 15.999 + 1 × 12.011 + 4 × 1.008 = 60.056.
What is the molecular weight of Urea?
60.056 — 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 60.06 and a molar mass of 60.06 g/mol are the same answer.
How many moles are in 100 g of Urea?
100 ÷ 60.056 = 1.6651 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Urea?
By mass, Urea is 46.65% nitrogen, 26.64% oxygen, 20.00% carbon, 6.71% hydrogen. Each element's share is its total mass in the formula divided by 60.056.
How many atoms are in one formula unit of Urea?
8: 2 nitrogen, 1 oxygen, 1 carbon, 4 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Urea contains 8 × 6.022 × 10²³ atoms in total.