On heating 1.763 g of hydrated BaCl(2) t...

On heating `1.763 g` of hydrated `BaCl_(2)` to dryness, `1.505 g` of anhyrous salt remained, What is the formula of hydrate?

`BaCl_2 . 1/2 H_2O`

`BaCl_2 . H_2O`

`BaCl_2 . 2H_2O`

`BaCl_2.5H_2O`

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