If the density of some lake water is `1.25 g mL^-1` and contains 92 g of `Na^(+)` ions per kg of water, calculate the molality of `Na^(+)` ions in the lake.

The density of lake water is found to be 1.25 g mL^(-1) and contains 90 g Na^+ ions per Kg water. Calculate the molality of Na^+~ in the lake

If the density of pure water is 1g/ml then what is the molarity of water?

Calculate the molarity of a solution containing 1g of NaOH in 250 mL of water.

An antifreeze solution is prepared from 222.6 g of ethylene glycol (C_2H_6O_2) and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g mL^-1 , then what shall be the molarity of the solution?

A solution containing 15g urea (molar mass = 60g/mol) per litre of solution in water is isotonic with the solution of glucose (molar masss 180g//mol ) in water calculate the mass of glucose present in one litre of its solution,.

A solution of sucrose (molecular mass 342 u) is prepared by dissolving 0.84 g in 100g of water at 298K. Calculate the boiling point of water in the solution (K_b for water = 0.52 K kg mol^-1)

A solution of sucrose (molecular mass 342 u) is prepared by dissolving 0.84 g in 100g of water at 298K. Calculate the freezing point of water in the solution. (K_f for water = 1.86 K kg mol^-1)

Two bodies whose masses are m_1 = 50 kg and m_2 150g are tight by a string and placed in a horizontal surface. When m_1 is pulled by a force F and acceleration of 5ms^-2 is produced in both the bodies. Calculate the value of F and tension in the strong.

Ethylene glycol (molar mass = 62gmol^-1) is a common automobile antifreeze. Calculate the freezing point of a solution containing 12.4g of this substance in 100g of water. Would it be advisable to keep this susbtance in the car radiators during summer? Given K_f for water = 1.86 K kg//mol K_b for water = 0.612 K kg//mol