Chemistry 11-14-11 Percent Composition

CHEMISTRY: Great job today… although, it was kind of weird watching you chew gum in class! Double check your calculations, sig figs, etc. Remember you are finding the percent of SUGAR in gum, so that means the mass of what goes on top? Lab reports are due Monday.

BTW – I think you’ll find that percent composition problems are really easy to catch on to. Make sure, though, you can write chemical formulas (I won’t give them to you!) and that you’ve memorized the formulas for acids and those common substances from #58, so that you’ll have something to find the percent composition of. Don’t stop practicing those as well!

flickr photo by Τϊζζ¥

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7 thoughts on “Chemistry 11-14-11 Percent Composition

  1. Sad that I missed today, but I did watch the vodcast. I found it pretty helpful so hopefully when I’m back it’ll be easy to jump back into things.
    Just wondering? But will we still do the lab tomorrow or will I need to come fore a makeup day?

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