The freezing point of 1-butanol is 25.50°C and Kf is 9.1°C . kg/mol. Usually t-butanol absorbs water on exposure to air, If the freezing point of a 10.0-g sample of t-butanol is 24.59°C, how many grams of water are present in the sample?

Phenanthrene, C14H10, is an aromatic hydrocarbon. Some phenanthrene is dissolved in 50.0 g of benzene and the boiling point of the resulting solution is 80.51°C. What mass of phenanthrene must have been dissolved? The Kb for benzene is 2.53 °C/m and the boiling point of pure benzene is 80.2°C.

5.152g of Na2CO3(s) is added to 75.0mL of water at 21.20°C. When the dissolution is complete, the final temperature of the solution is measured at 25.00°C. The final volume of the solution is 75.8mL, and the density of water at 21.20°C is 0.99798g/mL. Identify the strongest intermolecular force present in Na2CO3(s): and in water:

If dissolving 1.5 g of a solute into 100 mL of water caused the temperature of the solution toincrease by 4.7 ⁰C, what would the change of temperature be if 3.0 g of the solute were dissolvedin the same volume of water? Explain.

Calculate the freezing point of a solution containing 74.0 g of eucalyptol (C10H8O) solute dissolved in 0.600 kg of CHCl3.  The freezing point of pure CHCl3 is -63.5 oC.  CHCl3 has a Kf of 4.68 oC/molality. -64.9 oC -67.5 oC -48.3 oC -58.0 oC -69.0 oC -62.1 oC -59.5 oC -78.7 oC

- 3 At 25.0 °C the Henry's Law constant for methane (CH,) gas in water is 1.4 x 10 °M/atm. Calculate the mass in grams of CH, gas that can be dissolved in 725. mL of water at 25.0 °C and a CH, partial pressure of 3.66 atm. 4 Be sure your answer has the correct number of significant digits.

A student obtained a mixture of three organic solvents that are miscible in each other. Solvent XY has a boiling point of 67.8 °C, solvent XZ has a boiling point of 34.2 °C and solvent XD has a boiling point of 102.6 °C. Describe a detailed procedure that allows the student to purify this mixture.

wOn Camp X Dashboard 9Microsoft PowerPoint - Chap X 101 Chem 1 G celsius to kelvin - Goog app.101edu.co Question 6 of 10 A 83.5 g sample of a nonelectrolyte is dissolved in 374.5 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 solution is made by dissolving 6.60 grams of MgCl2 in 380.0 mL of water. What is the freezing point of this solution (in °C)? Express you answer to 3 significant digits.   Density of water 1.00 g/mL Kf of water 1.86oC/m

How many grams of glucose (molar mass = 180.16 g mol1) must be dissolved in 255 g of water to raise the boiling point to 102.56 °C? Mass of glucose = g Use correct number of significant digits;