Question

what is the fixed number of water molecules that are chemically attached to each formula unit of salt in its crystalline form​

Answer 1

Answer:

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Your answer is Water of crystallisation.

Ex-FeSO4.7H2O ,Na2CO3.10H2O

Here, 7 and 10 are the water of crystallisation.

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Answer 2

Water of crystallisation.

Ex-FeSO4.7H2O ,Na2CO3.10H2O

Here, 7 and 10 are the water of crystallisation.