At −11.5 ∘C−11.5 ∘C, a common temperature for household freezers, what is the maximum mass of…

At −11.5 ∘C−11.5 ∘C, a common temperature for household
freezers, what is the maximum mass of fructose
(C6H12O6) you can add to1.50
kg1.50 kg of pure water and still have the solution freeze? Assume
that fructose is a molecular solid and does not ionize when it
dissolves in water.