87. A metal fluoride crystallizes in a close-packed arrangement of fluoride ions, with the metal ions occupying one-half of the octahedral holes. What is the formula of this compound?
(A) MF
(B) MF₂
(C) MF₃
(D) M₂F
(E) M₂F₃

83. Two complex ions containing Ni are , which is blue, and , which is purple.Which one of these statements is correct? (en = H2N–CH2–CH2–NH2)(A) The wavelength of the light absorbed by is greater than the wavelength absorbedby .(B) The energy of the photon absorbed by [Ni(en)3]2+ is greater than that absorbed by.(C) Both complex ions are diamagnetic.(D) absorbs light in the violet region of the spectrum.(E) The crystal field splitting energy () is greater for than for .

84. Which of the following becomes more soluble in water upon addition of NaOH?(A) an amine (B) a carboxylic acid (C) a phenol(D) an alkane (E) two of these

85. Given the compound as shown below: Which of the labeled H atoms (1-5) in the following molecule would be predicted to be the most acidic?(A) 1 (B) 2(C) 3(D) 4(E) 5

86. Which of the following compounds exhibits the highest stability?(A) 2-methyl-1,2-pentadiene (B) (Z)-2-methyl-1,3-pentadiene(C) （E）-2-methyl-1,3-pentadiene (D) 2-methyl-2,3-pentadiene(E) 2-methyl-1,4-pentadiene

88. As indicated by Lewis structures, which of the following species could not comply with the octet rule?  I. NO; II. NO2; III. N2O4; IV. CO; V. CH3NC(A) f and II (B) II, III, and V (C) I, III, and V(D) I, II, III, and V (E) I, II, and V

89. fdentify the major product of the reaction below.(A)(B)(C)(D)(E)

90. ff a 20.0 g sample of CaCO3 is put into a 20.0 L container and heated to 800℃, what the mass percentage of the CaCO3 will react to reach equilibrium? (Ca=40.08 g/mol), = 1.16 at 800℃(A) 100% (B) 76% (C) 50% (D) 24% (E) 13%

1. B 公司 X7 年 5 月 1 日支付一年期租金費用$36,000，支付租金當天會計分錄為借記「租金費用」$36,000，貸記「現金」$36,000，則 X7 年 12 月 31 日關於租金費用的正確調整分錄為何？ (A)借記「租金費用」$12,000 (B)貸記「現金」$24,000 (C)借記「預付租金」$12,000 (D)貸記「租金費用」$24,000

2. B 公司 X6 年 1 月初設立定額零用金$20,000，同年 4 月底因為零用金即將用罄，故保管人申請撥補零用金，撥補當時零用金保管人尚持有的現金餘額$1,000。此外，零用金保管人持有的發票與收據包含文具用品費$2,000、交通費$3,000、餐費$4,000、水電費$7,000、郵資$2,500，則下列關於撥補零用金的分錄何者正確？ (A)貸記「用品費用」$2,000 (B)貸記「零用金」$19,500 (C)貸記「現金」$19,500 (D)借記「現金缺溢」$500

3. B 公司 X7 年 1 月 1 日「應收帳款」$360,000，「備抵損失」$60,000，同年 1 月 10 日沖銷一筆呆帳$10,000， 則沖銷該呆帳之後，「應收帳款」淨變現價值為何？ (A) $290,000 (B) $300,000 (C) $310,000 (D) $350,000