What is the maximum amount (in grams) of CO2 that can be obtained from 454g of Fe2O3?

Answer 1

This is a logical extension of your first problem. Work it first, then we can tackle this one.

Answer 2

Convert 454 g Fe2O3 to mols.
Convert mos Fe2O3 to mol CO2.
Convert mols CO2 to grams CO2.