Hon Chemistry 3-23-12 Molecular Formulas

HON CHEMISTRY: Happy Mole Day!!

Great job with empirical and molecular formulas today! The hardest part is that it’s not a set formula for you to plug and play, but if you’ll keep in mind that you’re really just looking for subscripts which are just moles, you’ll be able to think it through. Percent to mass, mass to moles, moles to smallest whole number ratio.

And then also remember what molecular formulas are – just a multiple of the empirical formula. Keep that concept in mind, and you’ll have no problem remembering to divide the molecular formula mass by the empirical formula mass to find X! Easy peasy! Help session?

flickr photo by Elizabeth The Queen Of All Things


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