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1. Define Hydrated salt.
The number of molecules found in the substance is called water of .
These salts are known as hydrated salts.
2. A hot saturated solution of copper sulphate forms crystals as it cools. Why?
As a hot saturated copper sulphate \(CuSO_4\) solution cools, crystals form.
Because the molecules move closer together as it cools, there is for the solution to retain as much of the dissolved , and thus crystals form.
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