8. Diseña un procedimiento para separar los componentes de las sigulentes mezclas, e indica qué material de laboratorio necesitarías. a) Una mezcla de alcohol y agua. b) Una mezcla heterogénea de tres líquidos no miscibles: agua, aceite y mercurio. c) Una mezcla de azufre, limadura de hierro y permanganato de potasio. d) Arena, sal y agua.

Which of the following represent a buffer system? Check all that apply. \( \square \mathrm{NaOH} \) and NaCl \( \square \mathrm{H}_{2} \mathrm{CO}_{3} \) and \( \mathrm{NaHCO}_{3} \) HF and KF KCl and NaCl

\[ \mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+2 \mathrm{Al}(\mathrm{s}) \rightleftharpoons \mathrm{Al}_{2} \mathrm{O}_{3}(\mathrm{~s})+2 \mathrm{Fe}(\mathrm{s}) \] View Available Hint(s) The equilibrium will shift toward the reactants. The equilibrium will shift toward the products. The reaction will not shift toward either the products or reactants. The reaction will shift toward both the reactants and products.

Please select the molecule(s) with double bond(s) from the following. \( \mathrm{CCl}^{2} \) CHCl 3 CO 3 H 2 O None

Which of the following molecule(s) have lone pair electrons and/or non-identical central bonds? \( \mathrm{CCl}_{4} \) \( \mathrm{CHCl}_{3} \) \( \mathrm{SO}_{3} \) \( \mathrm{CO}_{2} \mathrm{O} \)

Based on your worksheet results, please match the following: The electron group geometry of CCl 4 is The electron group geometry of CHCl 3 is [Choose ] [Choose ] The electron group geometry of \( \mathrm{SO}_{3} \) is [Choose ] [Choose ] electron group geometry of H 2 O is [Choose ]