Nadia L.

Arrange the elements oxygen, sulfur, tellurium, and selenium in order of increasing atomic radii. Is your order an example of a group trend or a period trend?

Rank the contents of the following containers in order of increasing entropy: [Section 13.1$]$

Which of the following is the best representation of a saturated solution? Explain your reasoning. [Section 13.2$]$

The structures of vitamins E and $\mathrm{B}_{6}$ are shown below. Predict which is more water soluble and which is more fat soluble. [ Section 13.3$]$

The figure shows two identical volumetric flasks containing the same solution at two temperatures.
(a) Does the molarity of the solution change with the change in temperature?
(b) Does the molality of the solution change with the change in temperature? [Section 13.4]

Indicate the type of solute-solvent interaction (Section 11.2$)$ that should be most important in each of the following solutions: (a) $\mathrm{CCl}_{4}$ in benzene $\left(\mathrm{C}_{6} \mathrm{H}_{6}\right),$ , ( b ) methanol $\left(\mathrm{CH}_{3} \mathrm{OH}\right)$ in water, (c) $\mathrm{KBr}$ in water, $(\mathbf{d}) \mathrm{HCl}$ in acetonitrile $\left(\mathrm{CH}_{3} \mathrm{CN}\right)$