Topic: Excess Reactants

This episode explains how to calculate excess reactants, which is the amount of unreacted substance left over after a chemical reaction. It emphasizes that you must first identify the limiting reactant, the substance that gets completely consumed. It outlines two methods for calculating the excess amount: either by determining how much of the excess reactant is consumed and subtracting that from the initial amount, or by calculating the required amount and subtracting that from the available amount. It walks through examples and concludes by highlighting the importance of this calculation for a complete understanding of a chemical reaction.