Question

How many moles of oxygen reacts with 2.4 moleof iron in the rusting reaction?

Answer 1

Rust is a somewhat complicated compound but if we call it simply Fe2O3, then 4Fe + 3O2 ==> 2Fe2O3
2.4 mols Fe x (3 mols O2/4 mols Fe) = 2.4 x 3/4 = ?