Gypsum is hydrated calcium sulphate, CaSO4.2H2O.calculate percentage of water by mass.
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he compound shown in the figure is calcium sulphate dyhydrite.
The common name of above compound is Gypsum.
The Chemical is CaSO4. 2H2O.
Usually, gypsum has water associated in the molecular structure (CaSO4·2H2O) and is approximately 23.3 percent Ca and 18.5 percent S (plaster of paris).
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