Question

4Fe+ 3O2 > 2Fe2O3 To produce 3 moles of Fe2O3 how many moles of Fe must be reacted?

Answer 1

Answer: 6 mol Fe

Explanation: For every 2 mol of Fe2O3, 4 mol of Fe react. That means for every mol of Fe2O3, 2 mol of Fe react. 3 mol Fe2O3 require 6 mol Fe.