Stoichiometry At high temperatures, sulfur combines with iron to form the brown-black iron (II) sulfide:
Fe (s) + S (l) → FeS (s)

In one experiment, 5.35 g of Fe are allowed to react with 10.1 g of S.
What is the limiting reactant?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules