Stoichiometry uses mathematical techniques to determine the amounts of substances that either react together or are produced in a chemical reaction. If you have a chemical equation and a question about the amounts of any of its components, then you are ready to apply the concepts used in this Tutor. Stoichiometry is an advanced chemistry topic and the Tutor will clearly explain the logic behind every step needed for you to reach the correct solution. You can enter your own chemical equation and chemical quantities, either in grams or moles, and the Tutor will guide you through every step. After studying with the Tutor, you will be able to figure out things like how much of a product could be produced from a given amount of reactant or how much of one reactant will be necessary to react with a certain amount of another reactant.