If the change in temperature of a sugar added solution of water increased its boiling point by 0.6C how many moles of sugar was added to the water?
dT = Kb*molality
You know Kb and dT, solve for m.
m = mols sugar/kg solvent
You know m and you don't know kg H2O. Can't go further. If you hae that info, then substitute and solve for mols sugar.