freezing pointdepression= Kf*molality
now Kf is freezing point depression, in this case water, which is 1.86deg*molality of particles
= 1.86*4*2.64
that the the depression below the normal freezing point, OC
for boiling point elevation, Kb, the amount boiling point is elevated, kb=.52deg/mole
boiling point elevation here
= .52*4*2.64 degrees, and the boiling point then is 100C+ the elevation
