An aqueous solution containing 17.5 g of an unknown molecular compound in 100.g water was found to have a freezing point of -1.8°C. Calculate the molar mass of this unknown compound. You can use the following steps to solve this problem. Show your work. a. What is the freezing point change (ATA) from pure water? The freezing point of water is 0.0°C. b. What is the freezing point depression constant (K) of water? c. What is the molality of the solution? (m= d. Solve the moles of the solute. moles of solute kg of solvent e. Knowing the mass of the compound, and the moles of the compound, solve the molar mass of the compound.

Calculate the solubility of CaF, in water at 25 °C. You'|l find K.n data in the ALEKS Data tab. 2 sp Round your answer to 2 significant digits. x10

Beaker A has 1.00 kg of water and 0.100 mol of glucose. Beaker B has 1.00 kg of water and 0.100 mol of CaCl2. Answer the questions below, using LT (for less than), GT (for greater than), EQ (for equal to), or MI (for more information required) in the blanks provided. Xkmnbcz5a. The vapor pressure of pure water ________ the vapor pressure of the solution in Beaker A.b. The boiling point of the solution in Beaker A ________ boiling point of the solution in Beaker B.c. The molarity of the solution in Beaker A ________ molarity of the solution in Beaker B.d. The freezing point of the solution in Beaker A ________ freezing point of the solution in Beaker B.e. The solubility of the solute in Beaker A ________ solubility of the solute in Beaker B.

Find the freezing point of a solution of 990 g of CH3OH in 2.5 kg of water. Use the water f.p.–depression constant: Kb(H2O) = 1.86 °C/{mol(solute)/kg(solvent)} A) +123 °C B) +77 °C C) +23 °C D) –0.74 °C E) –23 °C

Circle the one best Which one of the following is not a colloid? a. aerosol b. solvent c. emulsion "A solution not in equilibrium with respect to a given dissolved substance and in which more of the substance can ssolve" is known as what type of solution? a. unsaturated b. saturated loc. supersaturated Which one of the following is not a stable common ion? b. Bi³+ c. Sr2+ a. C12- d. p3- Which one of the following has the second highest boiling point? a. H₂Te b. H₂O c. H₂Se d. H₂S What is another name for a "lone pair"? a. base pair What occurs at the triple point in a phase diagram? b. There are three different melting points available. a. There are three different boiling points available. c. All phases are in equilibrium. udzianwollet end. A supercritical fluid has formed. "A measure of the ability of an atom in a molecule to draw bonding electrons to itself" is the definition of what? a. electronegativity b. totality c. bond order d. polarity b. nonbonding pair Which one of these…