Websites
This website contains a few useful stoichiometry practice problems. Type in your answers and click submit. You'll soon find out if you're correct.
Still need some additional practice problems? Check these out… complete with answers at the bottom of the page.
This website gives tons of practice on balancing chemical equations.
Videos
Here is a short, but sweet, recap of all things stoichiometry. Need a nice refresher?
Another quick and simple stoichiometry overview. A little extra help couldn't hurt, right?
Lady Gaga and stoichiometry? Yes, please.
This video not only gives a refresher about basic stoichiometry concepts but it also works though many stoichiometry examples.
Here is a nice video tutorial about all things limiting reagents. We can tell you're excited.
This video will world though the difference between theoretical yield and percent yield.
Tools
This stoichiometry calculator can help you convert between all kinds of units. It will definitely save you time on your next homework assignment.
This is a molecular weight calculator. Just type in the chemical formula and voilà—it will give you the weight that you desire.