Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution containin 2.50 g of lauryl alcohol in 100.0g of cyclohexane freezes at 3.75oC. the freezing point of pure cyclohexane is 6.50oC and its Kf= 20.5oC/m. Calculate the molar mass of lauryl alcohol.

Define density.  Hexane has a density of 0.659 g/mL.  How many milliliters (mL) of hexane are in 15.0 grams (g) of hexane?

Biphenyl, C,,H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C,H,. At 25 °C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made from dissolving 14.4 g of biphenyl in 29.2 g of benzene? Psolution = Torr

An aqueous solution is made by dissolving 10.5 g of a non-electrolyte solute into 79.2 g of water. The freezing point of the solution is found to be 4.5oC lower than that of pure water (Kf=1.86oC/m).  Calculate the molality of the solution Calculate the molar mass of the unknown solute

Suppose that you add 22.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf of 5.12 oC/m. With the added solute, you find that there is a freezing point depression of 2.67 oC compared to pure benzene. What is the molar mass (in g/mol) of the unknown compound?

A solution is prepared by mixing 1.000 mole of methanol (CH3OH) and 3.18 moles of propanol (CH3CH2CH2OH). What is the composition of the vapor (in mole fractions) at 40°C? At 40°C, the vapor pressure of pure methanol is 303 torr, and the vapor pressure of pure propanol is 44.6 torr.

Suppose that you add 21.1 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf of 5.12 °C/m. With the added solute, you find that there is a freezing point depression of 2.86 °C compared to pure benzene. What is the molar mass (in g/mol) of the unknown compound?

When 2.85 g of a certain molecular compound X are dissolved in 85. g of dibenzyl ether ((CH₂CH₂)₂O), the freezing point of the solution is measured to be 2 -1.2 °C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. X x10 Ś

1.613 g sample of an unknown nonionizing molecular compound is added to 250.0 g of benzene(C6H6, MW = 78.11 g/mol). The normal freezing point of the solution is 0.17 C lower than the normalfreezing point of pure benzene. Based on this information, find the molecular weight of the unknowncompound. benzene =  Kf = 5.12 kg x Degrees C/mol.

When a 22.275 g sample of Compound B,  is dissolved in 480.2 g of benzene, the freezing point of the following solution is 3.73 ˚C. The freezing point of  benzene is 5.48 ˚C, and the Kf for benzene is 5.12 ˚C/m. Determine the molar mass of Compound B.