Question

How many iron atoms are in 5.4 mol of Fe203?

Answer 1

6.5×10²⁴ atoms Fe

Step-by-step explanation:

First find moles of iron:

5.4 mol Fe₂O₃ × (2 mol Fe / mol Fe₂O₃) = 10.8 mol Fe

Now calculate atoms of iron:

10.8 mol Fe × (6.02×10²³ atoms Fe / mol Fe) = 6.5×10²⁴ atoms Fe