Molar Mass of Calcium chloride
CaCl2 — 110.978 g/mol, worked out element by element.
Molar mass of Calcium chloride, CaCl₂
110.978 g/mol
Molecular weight 110.978 · 3 atoms per formula unit
Also known as: cacl2.
So hygroscopic it pulls water from the air, which is why it is spread on roads and used as a desiccant.
How 110.978 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Chlorine | 2 | 35.45 | 70.900 | 63.89% |
| Calcium | 1 | 40.078 | 40.078 | 36.11% |
| Total | 3 | 110.978 | 100% |
M = 2 × 35.450 + 1 × 40.078 = 110.978 g/mol
Grams to moles for Calcium chloride
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0090 mol | 5.426 × 10^21 |
| 10 g | 0.0901 mol | 5.426 × 10^22 |
| 25 g | 0.2253 mol | 1.357 × 10^23 |
| 50 g | 0.4505 mol | 2.713 × 10^23 |
| 100 g | 0.9011 mol | 5.426 × 10^23 |
| 250 g | 2.2527 mol | 1.357 × 10^24 |
| 110.978 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 Calcium chloride?
The molar mass of Calcium chloride (CaCl2) is 110.978 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 2 × 35.450 + 1 × 40.078 = 110.978.
What is the molecular weight of Calcium chloride?
110.978 — 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 110.98 and a molar mass of 110.98 g/mol are the same answer.
How many moles are in 100 g of Calcium chloride?
100 ÷ 110.978 = 0.9011 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Calcium chloride?
By mass, Calcium chloride is 63.89% chlorine, 36.11% calcium. Each element's share is its total mass in the formula divided by 110.978.
How many atoms are in one formula unit of Calcium chloride?
3: 2 chlorine, 1 calcium. One mole contains 6.02214076 × 10²³ formula units, so a mole of Calcium chloride contains 3 × 6.022 × 10²³ atoms in total.