Recall that for hydrates, water molecules can be evaporated by heating.
We can solve for x = waters of hydration or the # of molecules of H2O in the hydrate by doing these steps:
A hydrate of copper (II) chloride has the following formula: CuCl2 • xH2 O. The water in a 3.41-g sample of the hydrate was driven off by heating. The remaining sample had a mass of 2.69 g .
Find the number of waters of hydration (x) in the hydrate.
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