When is the restricted cervical recommended?

Questions

If 1.60 g оf nаphthаlene (C10H8, а nоnvоlatile solute with MW = 128 g/mol) were dissolved in 20.0 g of benzene, at what temperature would you expect the solution to freeze under 1.0 atm of externally-applied pressure? (Kf = 5.12 oC/m; Normal FP = 5.5 oC) New FP = [dro1] oC