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July 5, 2015

Homework Help: 12th grade chemistry

Posted by jerry on Monday, November 10, 2008 at 4:45pm.

A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of iron in the wire.

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