79. R-600a 電冰箱週圍溫度 30℃，在運轉時其冷凝壓力 (kg _f /cm ² )約為
(A)13.6
(B)11.6
(C)15.6
(D)5.1 。

80. 電冰箱越來越不冷的原因，可能是 (A)溫度調節設定太低 (B)冰箱門長時間關閉 (C)庫內電燈壞了 (D)庫內食物存放太多阻礙內部循環。

複選題1. Which of the following are incorrectly named? (A) SO42-, sulfate ion (B) Cr2O72- , dichromate ion (C) CO32- bicarbonate ion (D)CN-, cyanide ion (E) ClO- , chlorite ion

2. Which of the following organic compounds has (or have) the ketone functional group(s)? (A)(B)(C)(D) (E)

複選題3. Which of the following statements are true of uranium-238? (A)Its ionization energy is similar to of an atom of uranium-235. (B)Its mass will be slightly different from that of an atom of uranium-235. (C)It will contain a different number of protons than an atom of uranium-235. (D)Its chemical properties will be exactly like those of uranium-235. (E)All of the above are wrong

複選題4. Consider the following gas samples: (A)The volume of sample A is twice the volume of sample B. (B)The mean square velocity of molecules in sample A is twice as large as the mean square velocity of molecules in sample B. (C)The fraction of molecules in sample A, having a kinetic energy greater than some high fixed value, is larger than the fraction of molecules in sample B, having kinetic energies greater than that same high fixed value. (D)Assuming identical intermolecular forces in the two samples, sample A should be more nearly ideal than sample B. (E)The average kinetic energy of the molecules in sample A is twice the average kinetic energy of the molecules in sample B.

複選題5. The reaction of fats with sodium hydroxide is called: (A)solvolysis (B)saponification (C)alcoholysis (D)hydrolysis (E)aminolysis

6. Which of the followings would absorb microwave? (A)vibrational transitions (B)rotational transitions (C)electronic transitions (D)covalent-bond cleavage (E)nuclear transitions from α to β spin state

複選題7. Please select the central metals that exist in hemoglobin and chlorophyll. (A)iron (B)rhodium (C)zinc (D)cobalt (E)magnesium

複選題8. Which of the followings is (are) not aromatic compound(s)? (A)allene (B)naphthalene (C)pyridine (D)acetylene (E)ethylene

複選題9. Which of the following statements is (are) correct? (A)Electrons are never found in an antibonding molecular orbital. (B)All antibonding molecular orbitals are higher in energy than the atomic orbitals of which they are composed. (C)Antibonding molecular orbitals have electron density mainly outside the space between the two nuclei. (D)The fact that  O2  is paramagnetic can be explained by the molecular orbital diagram for O2 . (E)None of the above is true.

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