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Molar massSodium sulfate
Molar mass of Na2SO4 (Sodium sulfate)
The molar mass of Na2SO4 is 142.04 g/mol.
A neutral salt used in detergents and paper-making.
Step-by-step calculation
Add up the atomic masses of every atom in the formula:
2 × 22.99 + 1 × 32.065 + 4 × 15.999 = 142.04 g/mol
| Element | Atoms | Atomic mass (u) | Subtotal (g/mol) | % by mass |
|---|---|---|---|---|
| Sodium (Na) | 2 | 22.99 | 45.980 | 32.37% |
| Sulfur (S) | 1 | 32.065 | 32.065 | 22.57% |
| Oxygen (O) | 4 | 15.999 | 63.996 | 45.05% |
| Molar mass of Na2SO4 | 142.04 g/mol | |||
Moles to grams for Na2SO4
Multiply the number of moles by 142.04 g/mol to get the mass, and divide a mass by 142.04 g/mol to get the moles.
| Amount (mol) | Mass (g) | Mass (g) | Amount (mol) |
|---|---|---|---|
| 0.1 mol | 14.20 g | 1 g | 0.0070 mol |
| 0.25 mol | 35.51 g | 5 g | 0.0352 mol |
| 0.5 mol | 71.02 g | 10 g | 0.0704 mol |
| 1 mol | 142.04 g | 50 g | 0.3520 mol |
| 2 mol | 284.08 g | 100 g | 0.7040 mol |
| 5 mol | 710.20 g | 500 g | 3.5201 mol |
Experiments that use sodium sulfate
⚖️ Calculate any other formulaFrequently asked questions
What is the molar mass of Na2SO4?
The molar mass of Na₂SO₄ (sodium sulfate) is 142.04 g/mol, so one mole of sodium sulfate weighs 142.04 grams.
How do you calculate the molar mass of Na2SO4?
Multiply each element’s atomic mass by the number of atoms in the formula and add the results: 2 × 22.99 + 1 × 32.065 + 4 × 15.999 = 142.04 g/mol.
What percentage of Na2SO4 is oxygen?
Oxygen makes up 45.05% of the mass of Na₂SO₄.
How many grams are in one mole of Na2SO4?
One mole of Na₂SO₄ has a mass of 142.04 grams, and contains 6.022 × 10²³ formula units.