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• 18.Consider the second-order reaction A → products, Mich has a first half-life of 25 s.If the concen
• 19.Which of the following is the reason for minimum chemical interferences in inductively-coupled pl
• 20.The point group of H2O2 is_______  . (A) C2 (B) C2v (C) C3 (D) C3v(E) none of the above
• 21.The C–O bond order of CO_ is_______ . (A)1 (B)1.5 (C)2(D) 2.5 (E) 3
• 22.The reaction A→B + C is known to be zero order in A with a rate constant of 4.8 x 10-2 mol\/L •
• 23.Which of the following statements is\/are true? I. An excited atom can return to its ground stat
• 24.How many electrons can be described by the quantum numbers n = 4, l = 4, ml= 1? (A) 14(B)6(C)10(D
• 25.The concentration of OH- ions in a solution is 5.62 mM. Determine the pH of the solution. (A) 11.
• 26.In which of the following techniques are we measuring the amount of light absorbed as a function
• 27.A gas releases 2.0 J of heat and then performs 11.8 Jof woric. What is the change in the internal
• 28.The pKb of die base cyclohexamine, C6H11NH2, is 3.36. What is the pKa of the conjugate acid, C6H1
• 29.Ellipsometry is commonly used to measure the thickness of films. Which of the following signal is
• 30.Which of the following is not a feature of carrier g^s used in gases chromatogr\/)hy? (A)The car
• 4. Which of the following is a correct Diels-Alder reaction product of the following reaction? (A)(B
• 77. 左圖之逆止閥方向表示(A)(B)(C)(D)
• 複選題16. 根據表 2，下列 關 於 乙 烷 、 乙 烯 、 乙 炔 三 者 的 敘 述 哪 些 正 確 ？ (A) 將 三 種 氣 體 完 全 燃 燒 後，若 以 生 成 每 莫 耳 產 物 平
• 31.Determine tiie correct unit and magnitude of the electric field at distance x from the midpoint o
• 9. 在化學結構的描繪中，代表兩結構互為共振結構是下列何種箭頭的形式？ (A)(B)(C)(D)
• 14. XeF4 的 Lewis 結構中，Xe 周圍有幾個電子？ (A) 12 (B) 10 (C) 8 (D) 6
• 15. 某一特定元素之系列游離能為 I1 = 577.9 kJ\/mol，I2 = 1,820 kJ\/mol，I3 = 2,750 kJ\/mol，I4 = 11,600 kJ\/mol，和
• 16. (v) CH3CHO→CH3CH2OH；以上有幾項為還原半反應？ (A) 1 (B) 2 (C) 3 (D) 4
• 複選題17. 一反應瓶含有乙烷、乙烯和乙炔，在 室 溫 未 照 光 條 件 下 進 行 溴 化 反 應 後，下列哪 些化合物是可能得到的產物 ？ (A)(B)(C) (D) (E)
• 71. GPS 衛星定位系統中 C\/A 碼的波長約為(A)0.293m(B)293m(C)2.93m(D)29.3m。
• 72. 近代測量以旋轉橢球體作為圖徵水平投影之參考面，製圖時以地圖投影將橢球面化算為平面。經地圖投影後，在圖面上 方格的北方與子午線的北方，其間可能不相同，而有一夾角。此一角度稱為(A)大地角(B)
• 73. 使用經緯儀觀測時，常以望遠鏡之正鏡位置及倒鏡觀測，此種操作名為(A)前視(B)二次縱轉(C)縱轉(D)橫轉。