Calculate the mass of sodium sulphate required to prepared its 20% solution in 100g of water ?

Calculate the mass of sodium acetate required to make 500 mL of 0.375 molar aqueous solution.Molar mass of sodium acetate is 82.0 g mol^-1

Calculate the molarity of KOH in solution prepared by dissolving 5.6 g in enough water to form 250 mL of the solution.

Calculate the molarity of NaOH solution prepared by disolving '4g' of it in 250ml of water.

Calculate the molar mass of a substance 1 g of which when dissolved in 100 g of water gave a solution boiling at 100.1^(@)C at a pressure of 1 atm (K_(b) for water = 0.52 K kg mol^(-1))

A solution of an organic compound is prepared by dissolving 30 g in 100 g water. Calculate the molecular mass of compound and the osmotic pressure of solution at 300 K , when the elevation in boiling point is 0.52 and K_(b) for water is 0.52 K m^(-1) .

25 cm^(3) of ferrous ammonium sulphate solution require 20 cm^(3) of 0.1 N potassium dichromate solution. Calculate the amount of ferrous ammonium sulphate crystals dissolved in 250 cm^(3) of the solution. (Given equivalent).

Calculate the molality of a solution by dissolving 0.850g of ammonia ( NH_3 ) in 100g of water.

What mass of non-volatile solute (urea) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 30% . What will be the molality of solution?

The amount of KMnO_4 required to prepare 100 ml of 0.1 N solution in alkaline medium

Calculate the osmotic pressure of a solution obtained by mixing 100 cm^(3) of 1.5% solution of urea (mol. Mass=60) and 100 cm^(3) of 3.42% solution by cane sugar (mol. Mass = 342) at 20^(@)C . (R=0.082 litre atm/deg/mole)