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