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July 26, 2014

Homework Help: chemistry help

Posted by peter on Monday, March 23, 2009 at 7:59pm.

Determine the empirical formula for each substance.

1. A dead alkaline battery is found to contain a compund of Mn and O. Its analysis gives 69.6% Mn and 30.4% O.

2. A compound is 38.77% Cl and 61.23 %O.

3. Magnetic iron oxide is 72.4 % iron and 27.6% oxygen.

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