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How much BaCl(2).2H(2)O and pure water a...

How much `BaCl_(2).2H_(2)O` and pure water are to be mixed to prepare `50 g` of `12.0%` ( by wt.) `BaCl_(2)` solution?

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The correct Answer is:
`BaCl_(2).2H_(2)O=7.038g, H_(2)O=42.962g`;
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