how many chlorine atoms are present in 4.5 mol of FeCl2?

from the formula, you can tell how many moles of chlorine atoms per mole of FeCl2

To determine the number of chlorine atoms present in 4.5 mol of FeCl2, you need to consider the molar ratio between FeCl2 and chlorine atoms.

FeCl2 consists of one iron atom (Fe) and two chlorine atoms (Cl). Therefore, the molar ratio between FeCl2 and chlorine atoms is 1:2.

First, calculate the number of moles of chlorine atoms by multiplying the number of moles of FeCl2 by the molar ratio:

Number of moles of chlorine atoms = 4.5 mol * 2 mol/mol FeCl2 = 9 mol

Next, use Avogadro's number, which is approximately 6.022 × 10^23 particles/mol, to convert the number of moles of chlorine atoms into the number of individual chlorine atoms:

Number of chlorine atoms = 9 mol * 6.022 × 10^23 atoms/mol = 5.42 × 10^24 chlorine atoms

Therefore, there are approximately 5.42 × 10^24 chlorine atoms present in 4.5 mol of FeCl2.