Sodium Thiosulfate Pentahydrate at a glance
| Property | Value |
|---|
| Molar mass | 248.172 g/mol |
|---|
| Molecular weight | 248.172 u |
|---|
| Chemical formula | Na2S2O3·5H2O |
|---|
| Monoisotopic mass | 247.961248 u |
|---|
| CAS number | 10102-17-7 |
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| PubChem CID | 61475 |
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How to calculate the molar mass of sodium thiosulfate pentahydrate
2 × 22.99 + 2 × 32.06 + 8 × 15.999 + 10 × 1.008 = 248.172 g/mol
- Count the atoms in Na2S2O3·5H2O: Na 2, S 2, O 8, H 10.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 248.172 g/mol.
Elemental composition of sodium thiosulfate pentahydrate
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| Na Sodium | 2 | 22.99 | 45.98 | 18.527% |
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| S Sulfur | 2 | 32.06 | 64.12 | 25.837% |
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| O Oxygen | 8 | 15.999 | 127.992 | 51.574% |
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| H Hydrogen | 10 | 1.008 | 10.08 | 4.0617% |
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Grams and moles of sodium thiosulfate pentahydrate
| Amount | Equals |
|---|
| 1 g | 0.0040295 mol |
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| 10 g | 0.040295 mol |
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| 100 g | 0.40295 mol |
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| 0.1 mol | 24.817 g |
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| 1 mol | 248.17 g |
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| 1 g, in particles | 2.4266 × 10^21 |
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Calculate other compounds