Determine the amount of `CaCl_2` ( i=2.5) should be dissolved in 2.5 lit of water, so that its osmotic pressure is 0.75 atm at `27^@`C.

How many grams of glucose must be dissolved in 0.5 lit water for its osmotic pressure to be same us that of a solution of 12g urea in 250ml water.

What happens when SO_2 gas is passed through H_2 S dissolved in water ?

What weight of the non volatile urea (NH_2CONH_2) must be dissolved in 100g water in order to decrease its vapour pressure by 25%?

A solution of protein (extracted from crabs) was prepared by dissolving 0.75 g in 125 cm^3 of an aqueous solution. At 4^@C an osmotic pressure rise of 2.6 mm of the solution was observed. Then molecular weight of protein is (Assume density of solution is 1.00 g/cm^3 ):

Calculate the amount of H_2SO_4 present in 2lit of 0.5M solution.

1 litre of a solution containing 500 g of a protein exerts an osmotic pressure of 0.82 atm at 27^@C .The molecular weight of the protein is: