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April 16, 2014

Homework Help: chemistry

Posted by Anonymous on Sunday, February 24, 2013 at 2:24pm.

Consider a mixture of the two solids BaCl2 * 2H2O (FW=244.26 g/mol) and KCl (FW=74.551 g/mol). When the mixture is heated to 160 C for 1 hour, the water of crystallization is driven off:
BaCl2 * 2 H2O (s)  BaCl2(s) + 2 H2O(g)
A sample originally weighing 1.7839 g is found to weigh 1.5623 g after heating. Calculate the weight percent of Ba, K, and C1 in the original sample

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