1. Determine the molar mass of oxygen gas (O₂):
* Oxygen has an atomic mass of approximately 16 g/mol.
* Oxygen gas exists as a diatomic molecule (O₂), so the molar mass is 2 * 16 g/mol = 32 g/mol.
2. Use the formula: moles = mass / molar mass
* moles = 0.16 g / 32 g/mol
* moles = 0.005 mol
Therefore, there are 0.005 moles of oxygen in 0.16 g of oxygen gas.
