3.42gr of a substance of molecular weight 342 is present in 250g of water. Molality of this solution is:

Three grams of salt of molecular weight 30 is dissolved in 250 g of water. The molality of the solution is….

An aqueous solution of urea containing 18 g urea in 1500 cm^(3) of solution has density equal to 1.052. If the molecular weight of urea is 60, find the molality of the solution.

An aqueous solution of urea containing 18 g urea in 1500 cm^(3) of solution has a density of 1.5 g//cm^(3) . If the molecular weight of urea is 60. Then the molality of solution is:

In an oxidation-reduction reaction, MnO_(4)^(-) ion is converted to Mn^(+2) . What is the number of equivalents of KMnO_(4) (molecular weight = 158) present in 250 mL of 0.04 M KMnO_(4) solution?

Calculate the weight of sodium oxalate present in 250 mL of seminormal solution.

Y g of non-volatile organic substance of molecular mass M is dissolved in 250 g benzene. Molal elevation constant of benzene is K_(b) . Elevation in its boiling point is given by:s

The vapour pressure of water at T(K) is 20 mm Hg. The following solutions are prepared at T(K) I. 6 g of urea (molecular weight = 60) is dissolved in 178.2 g of water. II. 0.01 mol of glucose is dissolved in 179.82 g of water. III. 5.3 g of Na_(2)CO_(3) (molecular weight = 106) is dissolved in 179.1 g of water. Identify the correct order in which the vapour pressure of solutions increases

Twenty grams of a substance were dissolved in 500ml. Of water and the osmotic pressure of the solution was found to be 600mm of mercury at 15^(@)"C". Determine the molecular weight of the substance.

The freezing point of nitrobenzene is 278.8 K. A 0.25 molal solution of a substance (molecular weight : 120) in nitrobenzene has a freezing point of 276.8 K. Calculate the molal depression constant of nitrobenzene.

Given that 10g of a dibasic acid (molar mass = 100) are present in 600 mL of the solution. The density of the solution is ' 1.02 g/mL. Molality of solution is