1. Calculate the moles of FeCl3:
* Find the molar mass of FeCl3:
* Fe: 55.845 g/mol
* Cl: 35.453 g/mol
* Molar mass of FeCl3 = 55.845 + (3 * 35.453) = 162.204 g/mol
* Divide the mass of FeCl3 by its molar mass:
* Moles of FeCl3 = 50.0 g / 162.204 g/mol = 0.308 mol
2. Calculate the moles of Cl ions:
* Each FeCl3 molecule contains 3 Cl ions:
* Moles of Cl ions = 0.308 mol FeCl3 * (3 mol Cl / 1 mol FeCl3) = 0.924 mol Cl
3. Calculate the number of Cl ions:
* Use Avogadro's number (6.022 x 10^23 ions/mol):
* Number of Cl ions = 0.924 mol Cl * (6.022 x 10^23 ions/mol) = 5.57 x 10^23 Cl ions
Therefore, there are approximately 5.57 x 10^23 Cl ions present in 50.0 g of FeCl3.
