0.100mole of sodium chloride [ NaCl] is dissolved into 100 grams of pure water H2O. What is the mole fraction of sodium chloride [ NaCl]?

Calculate the molality of sodium chloride if 29 grams of sodium chloride (NaCl) and is dissolved in 1000 grams of water.

You form a solution by dissolving 15.39 grams of sodium chloride (molar mass = 58.44 g/mol) into 163.7 grams of water (molar mass = 18.02 g/mol). The total volume of the solution is 180.1 mL.

Part #1:

What is the molarity of sodium chloride in this solution?

Part #2:

What is the mass percent of sodium chloride in this solution?

Part #3:

What is the mole fraction of sodium chloride in this solution?

Part #4:

What is the molality of sodium chloride in this solution?

A solution of sodium chloride in water has a vapor pressure of 19.6 torrs at 25°C. What is the mole fraction of solute particles in this solution? What would be the vapor pressure of this solution at 45°C? The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torrs at 45°C and assumes sodium chloride exists as Na⁺ and Cl⁻ ions in solution.