6FeO3----->4Fe304+02 DELTA H=+ 392kj

Question

If 2.83 g of Fe2O3 decomposed according to the above reaction , how many kj of heat would be exchanged with the enviroment?

Answer 1

2.83 g Fe2O3 is how many moles?
6 moles Fe2O3 uses 392 kJ, so ?? moles will use xx kJ.