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Answer on Other Chemistry Question for leah

Question #33358
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?
Expert's answer
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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