Determine the molality of a solution prepared by dissolving 75 g of Ba(NO3)2(, in 374 g of water at 25 °C. Calculate the molality of 1 molar solution of NaOH given density of solution is 1.04 gram/ml....

Extracted text: Determine the molality of a solution prepared by dissolving 75 g of Ba(NO3)2(, in 374 g of water at 25 °C. Calculate the molality of 1 molar solution of NaOH given density of solution is 1.04 gram/ml. Calculate the concentration of 1 molal solution of NaOH in terms of percentage by mass. Calculate the molality and mole fraction of the solute in aqueous solution containing 3.0 g of urea (molecular mass = 60) in 250 g of water. Calculate the mol fraction of ethanol and water in a sample of rectified spirit which contains 95% of ethanol by mass.