I'm looking over the summer work submissions, and it appears the one giving people the most trouble is #24, converting densities. They are tricky, mainly because you often have to deal with cubed units (for volume). A good working of a problem like the ones you see online is here. Just remember that you have to multiply a cubed unit by a conversion factor three times (or cube the factor) in order to cancel it.
Comments? Other questions?
Tuesday, August 24, 2010
Monday, August 9, 2010
Happy Birthday, Avogadro!
Holy Mole-y! Today is Amadeo Avogadro's birthday - 234 years young! I'd recommend celebrating with a toast of a mole of water (only 18 mL) rather than blowing out 234 candles. You can also see more about Mr. Avogadro at http://chemistry.about.com/b/2010/08/09/this-day-in-science-history-august-9-amedeo-avogadro.htm
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