Theophylline at a glance
| Property | Value |
|---|
| Molar mass | 180.167 g/mol |
|---|
| Molecular weight | 180.167 u |
|---|
| Chemical formula | C7H8N4O2 |
|---|
| Monoisotopic mass | 180.064726 u |
|---|
| CAS number | 58-55-9 |
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| PubChem CID | 2153 |
|---|
How to calculate the molar mass of theophylline
7 × 12.011 + 8 × 1.008 + 4 × 14.007 + 2 × 15.999 = 180.167 g/mol
- Count the atoms in C7H8N4O2: C 7, H 8, N 4, O 2.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 180.167 g/mol.
Elemental composition of theophylline
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| C Carbon | 7 | 12.011 | 84.077 | 46.666% |
|---|
| H Hydrogen | 8 | 1.008 | 8.064 | 4.4758% |
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| N Nitrogen | 4 | 14.007 | 56.028 | 31.098% |
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| O Oxygen | 2 | 15.999 | 31.998 | 17.76% |
|---|
Grams and moles of theophylline
| Amount | Equals |
|---|
| 1 g | 0.0055504 mol |
|---|
| 10 g | 0.055504 mol |
|---|
| 100 g | 0.55504 mol |
|---|
| 0.1 mol | 18.017 g |
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| 1 mol | 180.17 g |
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| 1 g, in particles | 3.3425 × 10^21 |
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Calculate other compounds