Question

Fe2O3(s) + 2Al(s)-> 2Fe(l) + Al2O3(s)

What is the theoretical yield of iron if we begin the reaction with 10.5 g of Al (assume an excess of Fe2O3)

Answer 1

mols Al = grams/atomic mass = ?
Using the coefficients in the balanced equation, convert mols Al to mols Fe. That is the theoretical yield. If you want it in grams then g = mols x atomic mass.

Answer 2

5.6 × 102 kJ