Question

If 3.0 moles of HCl are consumed in the reaction below, how many moles of FeCl3 are produced?

6HCl + Fe2O3 --> 2FeCl3 + 3H2O

Answer 1

Here is a solved example of a
stoichiometry problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html

Post your work if you get stuck.

Answer 2

0.50 mol