32. (8 points) If a 25.0-g sample of a nonelectrolyte is dissolved in 145.0 g of...

Question

Question

Answer 1

Answer #1

m from . colligative properties, Depression in freeaing point is given by DTf= Kfxm To- wleighet of solute x 1000 x Kf . Must

Answer 2

Similar Homework Help Questions

A 83.5 g sample of a nonelectrolyte is dissolved in 250.1 g of water. The solution...

A 83.5 g sample of a nonelectrolyte is dissolved in 250.1 g of water. The solution is determined to have a boiling point of 102.3 °C. What is the molar mass of the compound? (Kb for water is 0.510 °C/m).
A 12.5855 g sample of an unknown compound (X) is dissolved in 32.0000 g of water....

A 12.5855 g sample of an unknown compound (X) is dissolved in 32.0000 g of water. The resulting solution has a freezing point of – 4.3oC. What is the molar mass of X? Kf = 1.858 oC/m.
Quest. 2 (15 pts A 6.50 g sample of a nonelectrolyte is dissolved in 97.8 mL...

Quest. 2 (15 pts A 6.50 g sample of a nonelectrolyte is dissolved in 97.8 mL of hydrogen acetate (density of hydrogen acetate is 1.24 g/mL) is found to freeze at 11.3 C. a) What is the molar mass of this compound? b) What would be the predicted molar mass of the compound if it was?? an electrolyte consisting of +1/.1 ions? For hydrogen acetate, Kr -3.9 °C/m and its freezing point is 15.5 °C

8. 4.64 g of a nonelectrolyte is dissolved in 185.0 g naphthalene. The resulting solution freezes...

8. 4.64 g of a nonelectrolyte is dissolved in 185.0 g naphthalene. The resulting solution freezes at 78.7°C. Calculate the molar mass. FP naphthalene = 80.2°C; K = 6.90 °C kg/mol Answer A solution is prepared by dissolving 30.7 g ethylene glycol (.M 62.0) in 500.0 mL HO. What is the vapor pressure at 100.0°C? deo = 1.00 g/mL Answer
1.When a solution is made from 32.2 g of an unknown nonelectrolyte dissolved in 151 g...

1.When a solution is made from 32.2 g of an unknown nonelectrolyte dissolved in 151 g of solvent, the solution boils at 83.44 °C. The boiling point of the pure solvent and its Kb are 79.31 °C and 4.47 °C/m, respectively. Calculate the molar mass of the unknown electrolyte in g/mol. 2. Calculate the molar mass (in g/mol) of an unknown nonelectrolyte if 0.898 g dissolved in 268.7 mL of water at 30.13 °C has an osmotic pressure of 68.1...
please show work? Question 20 (8 points) A 2.15 g sample of molecular solid was dissolved...

please show work? Question 20 (8 points) A 2.15 g sample of molecular solid was dissolved in 25.0 g of CS2. The boiling point elevation of the solution was 1:59°C. Find the molar mass of the unknown. (Kb of CS2 is 1.07°C/m)

When 4.57 g of a nonelectrolyte solute is dissolved in water to make 835 mL of...

When 4.57 g of a nonelectrolyte solute is dissolved in water to make 835 mL of solution at 23 °C, the solution exerts an osmotic pressure of 869 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of...

When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of solution at 27 °C, the solution exerts an osmotic pressure of 905 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 3.42 g of a nonelectrolyte solute is dissolved in water to make 885 mL of...

When 3.42 g of a nonelectrolyte solute is dissolved in water to make 885 mL of solution at 22 °C, the solution exerts an osmotic pressure of 873 torr. What is the molar concentration of the solution? concentration: concentration: How many moles of solute are in the solution? moles of solute mol What is the molar mass of the solute? g/mol molar mass

ill give good rating d) A 2.15 g sample of molecular solid was dissolved in 25.0...

ill give good rating d) A 2.15 g sample of molecular solid was dissolved in 25.0 g of CS2. The boiling point elevation of the solution was 1.59°C. Find the molar mass of the unknown. (Kb of CS2 is 1.07°C/m) e)What is the molality of C6H4Cl2 in a solution prepared by dissolving 2.97 g of C6H4Cl2 in 966 g of ethanol? f) The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in...