Answers

1. Answer:

   Mg⁺² = 0.525 mol/L

   Cl⁻ = 1.05 mol/L

   Explanation:

   The formula for magnesium chloride is MgCl₂, and in a solution the following process takes place:

   • MgCl₂ → Mg⁺² + 2Cl⁻

   By analyzing the stoichiometric coefficients, we can tell that the concentration of Mg⁺² ions is the same as the concentration of MgCl₂, while the Cl⁻ concentration is twice that value.

   In other words:

   • Mg⁺² concentration = MgCl₂ concentration = 0.525 mol/L

   • Cl⁻concentration = 2 * MgCl₂ concentration = 1.05 mol/L

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