1. Calculate the mass of chlorine:
* Mass of chlorine = Mass of iron chloride - Mass of iron
* Mass of chlorine = 3.384 g - 1.164 g = 2.220 g
2. Calculate the moles of each element:
* Moles of iron (Fe) = Mass of Fe / Molar mass of Fe = 1.164 g / 55.845 g/mol = 0.0208 mol
* Moles of chlorine (Cl) = Mass of Cl / Molar mass of Cl = 2.220 g / 35.453 g/mol = 0.0626 mol
3. Determine the mole ratio:
* Divide the moles of each element by the smallest number of moles:
* Fe: 0.0208 mol / 0.0208 mol = 1
* Cl: 0.0626 mol / 0.0208 mol = 3
4. Write the empirical formula:
* The mole ratio indicates that the empirical formula of the iron chloride compound is FeCl₃.
