Calculate the void volume of bcc unit cell if volume of unit cell is $8 \cdot 0 \times 10^{-23} \text{ cm}^3$

Calculate the molar mass of a nonvolatile solute if 6.4 g of it dissolved in 100 g water produces a relative lowering in vapour pressure of $0 \cdot 016$ at 300 K.

Calculate the cryoscopic constant of a solvent if depression in freezing point of $0 \cdot 3$ m solution of nonelectrolyte is $0 \cdot 48$ K

Identify the correct statement from following.