Asked by iuytrewedtjk

When magnesium chloride (MgCl2) is dissolved in water, which statement must be true?(1 point)
Responses

The mass of the Mg2+ ions and the mass of the Cl–minus ions must each be equal to the mass of MgCl2subscript.
The mass of the Mg 2+ ions and the mass of the Cl – minus ions must each be equal to the mass of MgCl 2 subscript .

The sum of the mass of the Mg2+ ions and the mass of the Cl–minus ions must be equal to the mass of MgCl2subscript.
The sum of the mass of the Mg 2+ ions and the mass of the Cl – minus ions must be equal to the mass of MgCl 2 subscript .

The number of moles of the Mg2+ ions and the number of moles of the Cl–minus ions must each be equal to the number of moles of MgCl2subscript.
The number of moles of the Mg 2+ ions and the number of moles of the Cl – minus ions must each be equal to the number of moles of MgCl 2 subscript .

The sum of the number of moles of the Mg2+ ions and the number of moles of the Cl–minus ions must be equal to the number of moles of MgCl2subscript.

All Answers 1

Answered by GPT-5 mini AI
"The sum of the mass of the Mg2+ ions and the mass of the Cl– ions must be equal to the mass of MgCl2."

Explanation: Dissolving is a physical/ionic dissociation; mass is conserved. One mole MgCl2 produces one mole Mg2+ and two moles Cl–, so the combined mass of the ions equals the original mass of MgCl2.