Q. 15.0( 2 Votes )

How many molecule

Answer :

(i) The chemical formula of Plaster of Paris is CaSO4. 1/2 H2O, so it has 1/2 molecules of water of crystallisation.

(ii) The chemical formula of Washing soda crystals is Na2CO3.10H2O, so it has 10 molecules of water of crystallisation.

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