The formula of gypsum is
The formula of gypsum is
A) CaSO4 .2H2O
B) CaSO4 ,3H2O
C) CaOCl2
D) CaSO4.\(\frac{1}{2 }\)H2O
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The formula of gypsum is
A) CaSO4 .2H2O
B) CaSO4 ,3H2O
C) CaOCl2
D) CaSO4.\(\frac{1}{2 }\)H2O