Question

cuantos gramos de oxido de hierro Fe,O3 se puede producir a partir de 12,80g de oxigeno para reaccionar con hierro solido

Answer 1

                  4 Fe + 3 O2 → 2 Fe2O3

Mm Fe2O3 = 159.68 g/mol
             O2 = 32 g/mol

g Fe2O3 = 12.80  g O2  x  1 mol O2  x  2 mol Fe2O3  x  159.68 g Fe2O3
                                          ``````````````   ````````````````````   ````````````````````````
                                            32 g O2           3 mol O2           1 mol Fe2O3

g Fe2O3 = 42.581