Answer :

Answer:

C

Explanation:

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Rewritten by : Barada

Answer:

C. Sr (NO3)2 •2 H2O

Explanation:

A 30.7 g sample of Strontium nitrate, Sr(NO3)2⋅nH2O, is heated to a contstent mass of 22.9.

Therefore, the calculated hydration number is Sr (NO3)2 •2 H2O.