A)A substance is used for making toys ,material for decoration and for making smooth surfaces. 1)write the name and formulae of substance . 2)write the chemical equation of preparation of this substance . 3)is it possible for a substance to have a fraction of water molecules of crystallisation attached to it?
B) give an example where removal of water molecules from a substance changes its color .what will happen if the water removed is restored in some amount.
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Answer:
Water of crystallization is the fixed number of water molecules chemically attached to a unit of a salt in its crystalline form.
Explanation:
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