Question

An aqueous solution contains three solutes. One liter contains: 0.200 moles of calcium chloride, 0.150 moles of magnesium chloride, and 0.750 moles of sodium chloride. How many grams of Cl are there per liter of this solution? a. 39.0 g b. 51.4 g c. 78.0 g d. 80.3 g e.103 g

Answer 1

mols CaCl2 = 0.2
mols Cl in CaCl2 = 2x that.

mols MgCl2 = 0.15
mols Cl in MgCl2 = 2x that.

mols NaCl = 0.75
mols Cl in NaCl = 1 x that.

total mols Cl = sum of Cl.

Then grams = mols x atomic mass.