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Nataly [62]
2 years ago
11

The formula of gypsum and that of plaster of parls are CaSO4.xH2O and CaSO4.yH2O respectively.

Chemistry
1 answer:
barxatty [35]2 years ago
3 0

Answer:

 \frac{3}{2}

Explanation:

Given formula of Gypsum:

               CaSO₄. xH₂O,

       True formula:

              CaSO₄. 2H₂O,  x  = 2

Formula of plaster of paris  = CaSO₄. \frac{1}{2} H₂O,

               y  =  \frac{1}{2}

The difference between x and y; x - y:

               x  - y = 2 -  \frac{1}{2}  =  \frac{3}{2}

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