Q. A $0.9157 \,g$ mixture of $CaBr _{2}$ and $NaBr$ is dissolved in water, and $AgNO _{3}$ is added to the solution to form $AgBr$ precipitate. If the mass of the precipitate is $1.6930\, g$, what is the percent by mass of $NaBr$ in the original mixture?
Some Basic Concepts of Chemistry
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