A \( 1.0 \mathrm{~g} \) sample of \( \mathrm{Co}\left(\mathrm{NH}_{2} \mathrm{CH}_{2} \mathrm{CH...

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A \( 1.0 \mathrm{~g} \) sample of \( \mathrm{Co}\left(\mathrm{NH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\right)_{3} \mathrm{Cl}_{3} \) is dissolved in \( 25.0 \mathrm{~g} \) of water and the freezing point of the solution is \( -0.87^{\circ} \mathrm{C} \). How many ions are produced per mole of compound? The \( K_{f} \) of water is \( 1.86^{\circ} \mathrm{C} / \mathrm{molal} \)
(a) 2
(b) 3
(c) 4
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