What is the final concentration of chloride ion, [Cl−], in a solution

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What is the final concentration of chloride ion, [Cl−], in a solution made by mixing 158 ml of 0.200 M NaCl with 200 mL of 0.150 M MgCl2? A) [Cl−] = 0.350 M B) [Cl−] = 0.187 M C) [Cl−] = 0.424 M D) [Cl−] = 0.192 M E) [Cl−] = 0.256 M

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What is the final concentration of chloride ion, $[{C l}^{-}]$ , in a solution made by mixing $158 m l$ of $0.200 M N a C l$ with $200 m L$ of $0.150 {M M g C l}_{2}$ ? A) $[{C l}^{-}] = 0.350 M$ B) $[{C l}^{-}] = 0.187 M$ C) $[{C l}^{-}] = 0.424 M$ D) $[{C l}^{-}] = 0.192 M$ E) $[{C l}^{-}] = 0.256 M$