1. He didn’t go to work because he got a _____ .
(A) sick
(B) fever
(C) exam
(D) angry

87. Consider the galvanic cell shown below (the contents of each half-cell are written beneath each compartment). The standard reduction potentials are as follows: Which of the following statements about this cell is incorrect? (A) The value of E° for this cell is 1.82 V (B) Electrons flow from the Cr electrode to the Pt electrode. (C) Reduction occurs at the Cr electrode. (D) The cell is not at standard conditions. (E) The value of E for this cell at 25°C should larger than 1.82 V.

88. A galvanic cell consists of two half-reactions: Cl2(g) + 2 e‒ → 2 Cl‒ (aq) Eº = 1.36 V Fe3+(aq) + e‒ → Fe2+(aq) Eº = 0.77 V What is the maximum work can be obtained from this cell at standard condition? (Faraday constant = 96500 C mol‒1 ) (A) 173.7 kJ (B) 347.4 kJ (C) 569.4 kJ (D) 113.9 kJ (E) None of the above.

89. Alkali metals (Group 1) are different with alkaline earth metals (Group 2). Which of the following statements is correct? (A) Alkali metals have larger ionic radii. (B) Alkali metals have higher melting points. (C) Alkali metals have greater first ionization energies. (D) Alkali metals have greater densities. (E) Alkali metals have greater electronegativity.

90. The partial pressure of CO2(g) is 0.22 atm and that of CO(g) is 0.44 atm in a mixture of the two gases at 25ºC. What is the mass fraction of CO2 in the mixture? (atomic weight: C = 12 g/mol, O = 16 g/mol) (A) 44% (B) 56% (C) 33.3% (D) 66.7% (E) 50%

2. A lion chased a rabbit. To _____the lion, the rabbit hid in a hole. (A) take (B) bake (C) make (D) escape

3. A genius always pays more attention to what _____ him most. (A) discourages (B) interests (C) likes (D) is fond of

4. Allen didn’t pass the road test. He felt that the police officer_____ him. (A) disliked (B) likes (C) hating (D) be angry with

5. He was in a bad mood, so he ______the CD player to listen to some music. (A) turned off (B) turned on (C) go on (D) got off

6. The Everglades National Park is the largest______ subtropical wilderness in America. (A) remained (B) remains (C) remaining (D) has remained

7. Four Romania shipwrecks have been discovered in the ______ of the Black Sea. (A) deep (B) depth (C) deepen (D) deeper