1. Determine the molar mass of fluorine gas (F₂):
* The atomic mass of fluorine (F) is approximately 19.00 g/mol.
* Since fluorine gas is diatomic (F₂), its molar mass is 2 * 19.00 g/mol = 38.00 g/mol.
2. Use the formula:
* Moles = Mass / Molar Mass
3. Plug in the values:
* Moles = 5.67 g / 38.00 g/mol
* Moles ≈ 0.149 mol
Therefore, there are approximately 0.149 moles in 5.67 grams of fluorine gas.