* Bromine gas exists as Br₂. This means a single molecule of bromine gas contains two bromine atoms.
* The number of moles of bromine atoms depends on the gas. If you have 1 mole of a gas that contains two bromine atoms per molecule (like Br₂), then you would have 2 moles of bromine atoms.
Equation:
```
moles of bromine atoms = (moles of gas) * (number of bromine atoms per molecule)
```
Example:
For 1 mole of Br₂ gas:
* moles of bromine atoms = (1 mole Br₂) * (2 bromine atoms/Br₂ molecule) = 2 moles of bromine atoms
If you have a different gas, replace Br₂ with the formula of that gas and adjust the "number of bromine atoms per molecule" accordingly.
