Perform lab activity to Determine the water of hydration of a compound. From the measured results, determine the water of hydration experimentally and compare it to the actual. Introduce the concept of chemical reactions stopping and elicit some reasons why they will stop. Form the equation for a typical reaction between sulfur and chlorine, indicating the products formed and balance the equation. From a given amount of each reactant, determine which reactant based on mole ratio will become the limiting reactant to the reaction.