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– ions must each be equal to the mass of MgCl2.
The mass of the Mg 2+ ions and the mass of the Cl – ions must each be equal to the mass of MgCl 2 .
The sum of the number of moles of the Mg2+ ions and the number of moles of the Cl– ions must be equal to the number of moles of MgCl2.
The sum of the number of moles of the Mg 2+ ions and the number of moles of the Cl – ions must be equal to the number of moles of MgCl 2 .
The number of moles of the Mg2+ ions and the number of moles of the Cl– ions must each be equal to the number of moles of MgCl2.
The number of moles of the Mg 2+ ions and the number of moles of the Cl – ions must each be equal to the number of moles of MgCl 2 .
The sum of the mass of the Mg2+ ions and the mass of the Cl– ions must be equal to the mass of MgCl2.