Question: It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A 47.03 gram sample

It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A 47.03 gram sample of a hydrate of CoCl2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 36.81 grams of the anhydrous compound remained. What is the formula of the hydrate? Use a period instead of a dot in the formula of the hydrate

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