What is vapour pressure of a solution containing $$1 \mathrm{~mol}$$ of a non-volatile solute in $$36 \mathrm{~g}$$ of water? $$(\mathrm{P}_1^0=400 \mathrm{~mm} \mathrm{Hg}$$)

Which of the following solutions behaves nearly as an ideal solution?

The solution containing $$6 \mathrm{~g}$$ urea (molar mass 60 ) per $$\mathrm{dm}^3$$ of water and another solution containing $$9 \mathrm{~g}$$ of solute $$\mathrm{A}$$ per $$\mathrm{dm}^3$$ water freezes at same temperature. What is molar mass of $$\mathrm{A}$$ ?

What is vapour pressure of solution containing $$1.8 \mathrm{~g}$$ glucose in $$16.2 \mathrm{~g}$$ water?

($$\mathrm{P}_1^0=24 \mathrm{~mm} \mathrm{Hg}$$ and Molar mass of glucose $$=180 \mathrm{~g} \mathrm{~mol}^{-1}$$)