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November 24, 2014

Homework Help: Chemistry+Empirical formula

Posted by Chopsticks on Thursday, January 15, 2009 at 11:48pm.

This is kind of tricky for me.

What os the empirical formula (lowest whole number ratio) of the compounds below?

A.

25.3% Cu, 12.9% S, 25.7% O, 36.1% water

How would i set this up? The water at the end is confusing me. I think I need to find the percentage of water inside the whole thing first, but I would be wrong. Can you help?

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