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2 October, 02:20

The number of moles of cl - ions needed to combine completely with 0.25 moles of mg+2 ions is: 0.50 0.125 0.75 0.25

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  1. 2 October, 06:04
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    Mg²⁺ + 2Cl⁻ = MgCl₂

    n (Mg²⁺) = 0.25 mol

    n (Cl⁻) = 2n (Mg²⁺)

    n (Cl⁻) = 2*0.25=0.50 mol
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