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July 3, 2015

Homework Help: chem

Posted by lara on Wednesday, April 11, 2012 at 3:43pm.

An experimental alloy contained by copper and tantalum. 3.7950 g of the alloy was dissolved and analyzed gravimetrically. The copper was precipitated and weighed as CuO, a mass of 0.1805 g was obtained. Calculate the %w/w Cu in the alloy. [Answer in 2 decimal places]

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