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5g of crystalline salt rendered anhydrous lost 1.89g of water. The formula weight of the anhydrous salts is 160. The number os water molecules of crystallisation is
A. 1
B. 2
C. 3
D. 5

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Correct Answer - D
(5-1.89 grams of salt require 1.89 grams of water 160 grams of salt requires ? Grams of water.

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