Calculate the mass percentage of benzene `(C_6H_6)` and carbon tetrachloride `(CCl_4)` if 22g of benzene is dissolved in 122g of carbon tetrachloride.

Calculate the mass percentage of aspirin (C_9H_8O_4) in acetonitrile (CH_3CN) when 6.5g of C_9H_8O_4 is dissolved in 450g of CH_3CN .

Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.

Calculate the mole fraction of glucose C_6H_12O_6 in a solution containing 20% glucose by mass.

Calculate the mass of ascorbic acid (Vitamin C, C_6H_8O_6) to be dissolved in 75g of acetic acid to lower its melting point by 1.5^@C . K_f = 3.9 K kg mol^-1

Calculate the mass of a non-volatile solute of molar mass 40 which should be dissolved in 114g octane to reduce its vapour pressure to 60%

Calculate the mass of compound ( molar mass = 256 g mol^(-1) ) to be dissolved in 75 g of benzene to lower its freezing point by 0.48 K (Kf= 5.12 K kg mol^(-1)) .

1.0 g of a nonelectrolyte solute dissolved in 50g of benzene lowered the freezing point of benzene by 0.40 K. The freezing point depression constant of benzene is 5.12 K kg mol. Find the molar mass of the solute.

2g of a non-electrolyte solute dissolved in 100g of benzene lowered the freezing point of benzene by 0.40 K. find the molar mass of the solute.

Calculate the osmotic pressure in pascal exerted by a solution prepared by dissolving 1.0g of polymer of molar mass 185,000 in 450 mL of water at 37^@C .

Two elements A and B form compounds having formula AB_2 and AB_4 . When dissolved in 20 g of benzene (C_6H_6) , 1 g of AB_2 lowers the freezing point by 2.3 K whereas 1.0 g of AB_4 lowers it by 1.3 K. The molar depression constant for benzene is 5.1 K kg mol^-1 . Calculate atomic masses of A and B.