A compound which is prepared from gypsum...

A compound which is prepared from gypsum has the property of hardening when mixed with proper quantity of water. Identify the compound. Write chemical equation to preapar the compound. Mention one important use of the compound.

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The name of the compound is Plaster Paris
Its chemical formula is `CaSO_(4).(1)/(2)H_(2)O`
`CaSO_(4).2H_(2)O CaSO_(4).(1)/(2)H_(2)O + 1(1)/(2)H_(2)O`

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