A sample of hydrated Barium Chloride, BCl2 x H2O weighed 428.3mg before and 356.2mg after heating as BaCl2. What is the average number of water of hydration per molecules of BaCl2?(what is the X in BaCl2 X H20?
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Expert's answer
2013-07-23T09:32:13-0400
We can find the mass of water in BaCl2*xH2O: 428.3 - 356.2 = 72.1 The molar mass of water is 18. So, we find the number of molecules of water: 72.1/18 = 4
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