A solution containing 8g of a substance in 100g a diethyl ether bolls at `36.86^@C`, whereas pure ether boils at `35.60^@C`. Determine the molecular mass of the solute (for ether `k_b`=2.02 K kg mol^-1)

0.25 g of a substance dissolved in 25 g of solvent boiled at a temperature higher by 0.208^@C than that of the pure solvent. What is the molercular mass of the substance. [K_(b)" for solvent =2.16 K kg/mol or Km"^(-1)]

The boiling point of benzene is 353.23K. When 1.80g of a non-volatile solute was dissolved in 90g of benzene, the boiling point is raised to 354.11K. Calculated the molar mass of the solute k_b for benzene is 2.53K kg mol^(-1)

Osmotic pressure of a solution containing '7 g' of a protein per '100 ~mL' of solution is '25 mm' Hg at '37^circ C'. Caiculate the molecular mass of protein?

A solution containing 100g ethylene glycol in 500g water is cooled to -6.2^@C. The amount of ice that will separate out will be (K_f "for water=1.86K kg mol"^(-1))

A solution containing 50 g of ethylene glycol in 200 g water is cooled to -9.3^(@)C . The amount of ice that will separate out will be ( K_(f) of water =1.86K Kg"mol"^(-1) )

A solution containing 0.1 g of a non-volatile organic substance P (molecular mass 100) in 100 g of benzene raises the boiling point of benzene by 0.2^@C, while a solution containing 0.1 gof another non-volatile subistance Q in the same amount of benzene raises the boiling point of benzene by 0.4^@C . What is the ratio of molecular masses of P and Q?

A 5.25% (w/v) solution of a substance is isotonic with a 1.5%(w/v) solution of urea ("molar mass =60 g mol"^(-1)) in the same solvent. Molar mass of the substance will be