Hon Chemistry 2-18-09 Empirical Formulas
HON CHEMISTRY: Great start on empirical 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. There’s a little added step you might have to add to the end – I mentioned it at the end of class today, we’ll go over it again tomorrow. Also tomorrow – molecular formulas.
February 19th, 2009 at 12:16 PM
isn’t molecular formula pretty much the same as empirical formula?
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February 19th, 2009 at 12:25 PM
no.
multiply by x, which is given over actual, i think…
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February 19th, 2009 at 12:37 PM
what is the definition of an empirical formula?
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February 19th, 2009 at 6:05 PM
Olivia, wikipedia says the empirical formula of a chemical compound is a simple expression of the relative numbers of each type of atom in it.
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February 19th, 2009 at 7:49 PM
When did you say our test will be?
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February 24th, 2009 at 1:58 PM
Im assuming we have to know all of the polyatomic ions and other stuff right?
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February 24th, 2009 at 1:59 PM
Im assuming we have to know all of the acids and other formulas that we had to look up right?
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