Question

1. how many moles of cl₂ are there in 45.8 mol fecl₃?

Explanation:

Step1: Write the chemical formula relationship

In $FeCl_3$, there are 3 moles of $Cl$ atoms per mole of $FeCl_3$. And 1 mole of $Cl_2$ has 2 moles of $Cl$ atoms.

Step2: Calculate moles of $Cl$ atoms in $FeCl_3$

Moles of $Cl$ in $FeCl_3$ = $45.8\times3 = 137.4$ mol

Step3: Calculate moles of $Cl_2$

Moles of $Cl_2=\frac{137.4}{2}=68.7$ mol

Answer:

68.7 mol