The vapour pressure of pure bronze at a certain temparature is 262atm. At the same temparature the V.P. of a solution containing 2.0g of non-volatile solid in 100g bronze is 256atm . What is the molecular mass of the solid?

A solution containing 2.44 g of solute dissolved in 75 g of water boiled at 100.413^@C . What will be the molar mass of the solute?

20g of ideal gas contains only atoms of S and O occupies 5.6 L at 1 atm and 273K. what is the molecular mass of gas ?

The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non-volatile, non-electrolyete solid weighing 0.5g when added to 39.0 g of benzene (molar mass 78 g mol^(-1) . Vapour pressure of the solution, then, is 0.845 bar. What is the molar mass of the solid substance?

The vapour pressure of water at 293K is 0.0231 bar and the vapour pressure of a solution of 108.24 g of a compound in 1000 g of water at the same temperature is 0.0228 bar. Calculate the molar mass of the solute.

Heptane and octane form an ideal solution at 373 K, the vapour pressures of the pure liquids at this temperature are 105.2 kPa and 46.8 kPa respectively. If the solution contains 25 g of heptane and 28.5 g of octane, calculate. mole fraction of octane in the vapour phase.

The vapour pressure of the solvent decreased by 10 mm of Hg when a non volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the fraction of the solvent if a decrease in vapour pressure of 20 mm of Hg is desired:

At 25^(@)C , the vapour pressure of pure liquid A (mol. Mas = 40) is 100 torr, and pure liquid B is 40 torr (mol. = 80). The vapour pressure at 25^(@)C of a solution containing 20 g of each A and B is :

2.9 g of a gas at 95^(@)C occupied the same volume as 0.184 g of dihydrogen at 17^(@)C at the same pressure. What is the molar mass of the gas ?

Ice begins to separate at -0.744^@C from a solution containing 2.4 g of non-electrolyte solute in 100 g of water. Calculate the molecular weight of non-electrolyte and osmotic pressure which the solution would exert at 20^@C ?

A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calculate: molar mass of the solute