1. The problem statement, all variables and given/known data Al(s) + Fe3 O4 = Fe (s) + Al2 O3(s) calculate how many grams of iron can be produced when 14.0g of Al are combined with excess FeO4. 2. Relevant equations 3. The attempt at a solution I know that I need to balance the solution which is: 8Al(s) + 3Fe3 O4 = 9Fe (s) + 4Al2 O3(s) net/ionic eq 8al + 3fe3o4 = 9fe + 4al2 o3 can someone please help me on this I can't get any further on finding the excess on using the net or balance ionic equation. I cant really cancel any out that are the same on both side. please help.