<u>Answer:</u> The mass of iron recovered is 17.5 grams
<u>Explanation:</u>
We are given a chemical compound having chemical formula of 
We know that:
Molar mass of iron (III) oxide = 159.7 g/mol
Mass of iron = 55.8 g/mol
We are given:
Mass of iron (III) oxide = 25 g
To calculate the mass of iron recovered in given amount of iron (III) oxide, we use unitary method:
From 159.7 grams of iron (III) oxide, mass of iron recovered is 
So, from 25 grams of iron (III) oxide, mass of iron recovered will be 
Hence, the mass of iron recovered is 17.5 grams