Molar Mass of Barium sulfate
BaSO4 — 233.386 g/mol, worked out element by element.
Molar mass of Barium sulfate, BaSO₄
233.386 g/mol
Molecular weight 233.386 · 6 atoms per formula unit
Also known as: baso4, barium sulphate.
So insoluble that it can be swallowed as an X-ray contrast agent despite barium being toxic.
How 233.386 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Barium | 1 | 137.33 | 137.330 | 58.84% |
| Oxygen | 4 | 15.999 | 63.996 | 27.42% |
| Sulfur | 1 | 32.06 | 32.060 | 13.74% |
| Total | 6 | 233.386 | 100% |
M = 1 × 137.330 + 4 × 15.999 + 1 × 32.060 = 233.386 g/mol
Grams to moles for Barium sulfate
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0043 mol | 2.580 × 10^21 |
| 10 g | 0.0428 mol | 2.580 × 10^22 |
| 25 g | 0.1071 mol | 6.451 × 10^22 |
| 50 g | 0.2142 mol | 1.290 × 10^23 |
| 100 g | 0.4285 mol | 2.580 × 10^23 |
| 250 g | 1.0712 mol | 6.451 × 10^23 |
| 233.386 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 Barium sulfate?
The molar mass of Barium sulfate (BaSO4) is 233.386 g/mol. That is the sum of the standard atomic weights of all 6 atoms in one formula unit: 1 × 137.330 + 4 × 15.999 + 1 × 32.060 = 233.386.
What is the molecular weight of Barium sulfate?
233.386 — 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 233.39 and a molar mass of 233.39 g/mol are the same answer.
How many moles are in 100 g of Barium sulfate?
100 ÷ 233.386 = 0.4285 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Barium sulfate?
By mass, Barium sulfate is 58.84% barium, 27.42% oxygen, 13.74% sulfur. Each element's share is its total mass in the formula divided by 233.386.
How many atoms are in one formula unit of Barium sulfate?
6: 1 barium, 4 oxygen, 1 sulfur. One mole contains 6.02214076 × 10²³ formula units, so a mole of Barium sulfate contains 6 × 6.022 × 10²³ atoms in total.