How the concentration on cl- was calculated from a solution

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How the concentration on Cl- was calculated from a solution of 0.0167M CdCl2. It gives the value [Cl-]=0.0334...but I'm having a massive brain fart and I have no idea how they got that. I'm losing it. This is easy...help me! Yeah I'm not in that class either.

Reference no: EM13490085

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