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The sulphate salt of group-2 element which is white soft substance and used for making different shapes by making its dough is CaSO4 hemi hydrate, it is commonly known as Plaster of Paris and its molecular formula is CaSO4.1/2 H2O.
When it is left some time in air it absorbs moisture and form a new product called gypsum which is hard in nature and can not be used for moulding purpose.
When it is left some time in air it absorbs moisture and form a new product called gypsum which is hard in nature and can not be used for moulding purpose.
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Adarshthakur11:
correct :-D
most welcome: D
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