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A" " 0.2g sample , which is mixture of N...

`A" " 0.2g` sample , which is mixture of `NaCl, NaBr` and `NaI` was dissolved in water and excess of `AgNO_(3)` was added. The precipitate containing `AgCl,AgBr` and `AgI` was filtered, dried and weighed to be `0.412g`. The solid was placed in water and treated with excess of `NaBr`, which converted all `AgCl` into `AgBr`. The precipitate was then weighed to be `0.4881 g`. It was then placed into water and treated with excess of `NaI`, which converted all `AgBr` into `AgI`. The precipitate was then weighed to be `0.5868 g`. What was the percentage of `NaCl, NaBr` and `NaI` in the original mixture :

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