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When 300ml 0.60M NaCl is mixed with 200ml 0.4M MgCl2, what will be the milar concentration of Cl-?

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When 300ml 0.60M NaCl is mixed with 200ml 0.4M MgCl2, what will be the milar concentration of Cl-?

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  1. Remembering 1000 mL = 1 L,

    (total moles Cl-) / (total volume) =

    [(0.300 L) (0.60 mol/L) + (2) (0.200 L) (0.4 mol/L)] / [0.300 L + 0.200 L] = 0.68 M.

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