Answer to Question #165967 in General Chemistry for Ysabella

Question

Calculate the mass (in grams) of magnesium chloride (MgCl2) that would be needed to

prepare 150 mL of a 20% by mass aqueous solution of the salt. The density of the

solution is 1.1 g/mL.

Answer 1

Density= m/V.

m= density x V. = 1.1 x 150 = 165 g.

165 x 20/100 = 33 g of MgCl2.