Question

2 Fe (s) + 6 HCl (aq) -> 2 FeCL3 (s) + 3 H2 (g)

12.2 grams of Fe reacts with excess of HCl. how many grams of FeCl3 will be produced?

Answer 1

Here is a worked example of a stoichiometry problem.
http://www.jiskha.com/science/chemistry/stoichiometry.html

Answer 2

thank you!