Homework Help: chemistry

Posted by chris on Wednesday, November 28, 2012 at 11:39am.

Naphthalene, commonly known as moth balls, is composed of 93.7% carbon and 6.3% hydrogen.
determine the empirical for naphthalene.
molecular formula for Naphthalene. Determine the number of empirical formulas you would need to make a full naphthalene molecule.

chemistry - DrBob222, Wednesday, November 28, 2012 at 7:06pm
Take a 100 g sample which will give you
93.7 g C
6.3% H.
Convert each to mols.
93.7/12 = ?
6.4./1 = ?
Now find the ratio of the two and that gives the empirical formula. There isn't enough information to find the molecular formula.

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