which is the correctly balanced equation for the reaction of rust, Fe2O3, and hydrochloric acid, HCl?


Fe2O3 + HCl → FeCl3 + H2O

Fe2O3 +3 HCl → 2 FeCl3 + H2O

Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O

Fe2O3 + 3 HCl → 2 FeCl3 + 3 H2O