11. 40.65 g of magnesium chloride is added to 220.0 mL of water at 34 °C....
5. A mass of 31.65 g of sodium chloride is added to 218.7 g of water at 34 °C. What will be the boiling point of the solution? Assume the sodium chloride completely dissociates in the water. Kh water=0.512 °C/molal. Slo ogni sebe
a) If 1.95 mol of calcium chloride is added to 2.30 kg of water then what is the freezing point lowering and the freezing point of the solution (Kf = 1.86 ºC/m)? b) If 0.500 mol of NaCl is added to 500 mL of water then what is the boiling point elevation and the boiling point of the solution (Kb = 0.52 ºC/m)?
How many grams of magnesium chloride (MgCl2) must be added to 23.0 g of water to prepare a 6.92% (m/m) solution of magnesium chloride?
34. A 122 mL sample of water at 97°C is added to a beaker containing 255 mL of water at 23.0°C. Calculate the final temperature of the water. The density of water is 1.00 g/mL.
For water, Kf = 1.86 °C∙kg/mole, Kb = 0.52 °C∙kg/mole and density = 1.00 g/mL. Calculate the boiling and freezing points of the following aqueous solutions: a) 18.4 g of glucose (C6H12O6) in 95.5 g of water. b) 15.0 g of magnesium fluoride in 75.0 mL water.
20. What is the total heat flow if 27 grams of steam at 143°C is cooled to become water at 34°C? The specific heat of water is 4.18 J/g. C; the specific heat of steam is 2.0 J/g. °C The heat of vaporization of water is 2.26 kJ/g, and the boiling point of water is 100°C 21. 75.0 mL of water is added to 12.9 mL of 0.250 M KMnO4 What is the concentration of the diluted solution? 22. Write...
[References] What volume of ethylene glycol (C2HO2), a nonelectrolyte, must be added to 12.0 L water to produce an antifreeze solution with a freezing point of-19.0°C? (The density of ethylene glycol is 1.11 g/cm°, and the density of water is 1.00 g/cm³. K, for water is 0.51°C•kg/mol and Kf is 1.86°C kg/mol.) Volume %3D What is the boiling point of this solution? Boiling point °C %3D 5 item attempts remaining Submit Answer Try Another Version [References] Consider an aqueous solution...
13.4 g of magnesium chloride is dissolved in 250. mL of water. What is the molarity of the solution? Round your final answer to three significant figures.
Part 4. Molality of the calcium chloride solution Molality is defined as mol solute Calculate the molality of your assigned calcium chloride solution. Assume that the density of kg solvent water is 1g/mL. Questions (SHOW ALL WORK) 1. Calculate the molarity (M) of a solution when 12.80 g of glycerol (CHsOs) is added to 40.70 g of water. The density of the solution is 1,052g/ml Colligative properties like boiling point elevation depend on the number of solute particles in solution....
11.Calculate the mass of sodium chloride, NaCl, required to lower the freezing temperatu re of ice by 0.50 K. The cryoscopic constant of water is 1.86 K kg mol-1. Assume the salt is 93% ionized. 12. Estimate the change in the normal boiling temperature of an aqueous solution of 12.6 g of phenol, C&H5OH, in 250 cm3 of water. The ebullioscopic constant of water is 0.51 K kg mol1. The molar mass of phenol is 94.12 g mol"