Question:

What is the formula of the hydrated salt

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if 50 g of an anhydrous salt X of molecular weight 100 is combined with 36g of water?

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  1. it sounds like Calcium chloride

    anhydrous: CaCL2  100g/mol

    hydrate : CaCl2- 4 H2O  172g/mol

    so if 50 grams of CaCl2 would combine with 36 grams of water , then 100 g of CaCl2 combines with 72 grams of water.

    that makes CaCl2 have 4  waters

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