Chemical Reactions- Stoichiometry

This video shows you how to calculate the molar mass for compounds using their chemical formulas. This video will build upon your previous knowledge of how to determine the mass of an element. It is important that you master this concept before moving to mass to mass stoichiometry (which involves this concept in addition to several others).

This short video will show you the simplest form of how to convert between moles of different substances using a balanced equation. The instructor uses two examples from different reactions to show you why the coefficients from the balanced equation matter in these calculations. Remember that the coefficients represent the number of moles!

In this video you will learn how to perform mass to mass stoichiometry problems. In order to understand this concept you must first have mastered mole to mole conversions, and molar mass calculations. This is the longest conversion problem that you will be required to complete.

Mr. Andersen explains the concept of a limiting reactant (or a limiting reagent) in a chemical reaction. He also shows you how to calculate the actual amount of product produced, as well as the percent yield of the product. The video starts with real world scenarios that will help you grasp the concept of limiting reactants easier. This concept requires understanding of how to complete mass to mass calculations before mastering this concept.

This site generates practice problems for you to complete one at a time and automatically grades it. If you miss a question three times, then you can press show answer to see how the problem should be worked out. The problems might be mole to mole, mass to mass, mass to mole, or mole to mass.

This tutorial describes how to determine the amount of each reactant that is consumed and each product that is produced in a given chemical reaction. Guided problems as well as a randomized calculation activities are provided.