Posted by Jerry on Sunday, September 18, 2011 at 9:56am.
Take a 100 g sample, convert percent to grams.
Convert grams each to moles.
Then find the ratio as in your other problems.
Determine the mass of the empirical formula, then find (molar mass/empirical mass) = n and round to a whole numbers.
(empirical formula)n is the molecular formula. Post your work if you get stuck.
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