哪位帥哥能拔刀相助一下，解釋一下為何

2-41 The 0-H hydrogen in acetic acid is more acidic than any of the C-H hydrogens. Explain this result using resonance structures. o H Acetic acid H H :0: :0: O=0 :: H-C =0 H-C H-C C=0 c H H H H H H The O-H hydrogen of acetic acid is more acidic than the C-H hydrogens. The-OH oxygen is electronegative, and, consequently, the-0-H bond is more strongly polarized than the -C-H bonds. In addition, the acetate anion is stabilized by resonance,

誰能解釋一下為什麼？下面英文解答看不懂

2-41 The 0-H hydrogen in acetic acid is more acidic than any of the C-H hydrogens. Explain this result using resonance structures. O=U H -H Acetic acid \" HH :0: :0: II C H-c H-C H- C=0 H H H H H H The O-H hydrogen of acetic acid is more acidic than the C-H hydrogens. The-OH oxygen is electronegative, and, consequently, the-O-H bond is more strongly polarized than the -C-H bonds. In addition, the acetate anion is stabilized by resonance.

為什麼第五題是（D)?

起 time. circulation et gi o quality o'Q A 4. Besides doing my homework after school , reading novels took up much of my (A) leisure Poppe by (B) school (C) occupied 5.15 to by (D) labogatory mi lehet A 5. Three volunteers have organized 5-13 6 a community watch program for the purpose of combating the crime rate. Pahina (A) risen zure EH XB) rose 2 EFT (C) rises EF (D) rising EHP b az . I lik re 6 TL

想問是這七題是這樣嗎？ 1.A 2.B 3.C 4.D 5.B 6.C 7.A

1. Black lung disease is working in a coal mine for years. A. connected with B. contradicting C. adapting to D. used to 2. Despite the pop festival passed off peacefully. A. the people worried about the safety B. worried the safety C. people's worries of safety D. the safety 3. The secret the success of Taiwanese cuisine is fresh and diverse ingredients. A. for B. of C. to D. in 4. He the project's success a sophisticated computer program. A. resulted from B. argued against C. substituted for D. attributed to 5. In many countries of the world, having a morning cup of coffee is important the start of the day. A. such as B. like C. as it marks D. yet customer 6. Many dot.com companies have learnt that technology can never service. A. tie to B. owe to C. depend on D. substitute for 7. The politician expressed his concerns about nuclear energy and decided to fight policy A. against the

請問有人看得懂嗎😂

Genetics 普通生物學 UNIT THREE 觀念11: DNA定序(DNA Sequencing) 端 單股DNA和帶有放射性 1. Sanger法(Sanger method)或Sanger雙去氧鏈終止法(Sanger dideoxy chain termination method) : 1. 以5碳糖上第2和第3個碳均去氧的核苷酸為材料,合成的DNA之3', 不能再接新的核苷酸,造成DNA终止。 2. dsDNA加熱變性,快速冷卻成單股DNA, (PP)標示的primer 配對。 3. 反應時分成四管: a) #AZDNA+primer+DNA polymerase+4dNTPs+ddATP b) ADNA+primer+DNA polymerase+4dNTPs+ddTTP c) ADNA+primer+DNA polymerase+4dNTPs+ddGTP d) 單股DNA+primer+DNA polymerase+4dNTPs+ddCTP 4. 終止反應,並用聚丙醯凝膠(polyacrylamide gel) 電泳分離。 5. 顯影後判讀X光片即可讀出DNA序列。 6. Frederick Sanger 因為這個方法獲得1980年諾貝爾獎。 Primer 5 OH 3 3' -CTAAGCTCGACT Template dCTP, dGTP, DATP, DTTP + ddATP - GATTCGAGCTGddA GATTCGddA F GddA + ddCTP GATTCGAGddC GATTddC + ddGTP - GATTCGAGCTddG GATTCGAddG GATTCddG ddG + ddTTP - GATTCGAGCddT -GATddT - GAddT G 3' 12 11 10 G C uuu9876543 21 5 As Tcc AccTT AG Autoradiogram of electrophoresis gel Sequence of complementary strand 500 1610 T天就在 下一秒就看到,

21題 教教我QAQ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

第21題 到底要怎麼寫ಥ_ಥ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

求解a b c

4 The diagram below shows part of the graph of y = along with the point (2,0.5) on the graph. 15 (2.0.5) OS - .. The diagram also shows a rectangle with sides parallel to the axes, one vertex is the given point and the opposite vertex on the branch of the graph in the third quadrant (a) Find the position of the vertex in the third quadrant that gives the rectangle with the smallest possible area. (b) Calculate this smallest possible area. 121 (e) Suppose that a similar rectangle with opposite verices 1 (- :) -- ~ 5) where a > 0) and < 0) has the same area. Find a relationship between a and b. 141 Maximum mark: 11)

第17題應該要怎麼算

| 3-2) 1-5 馆 一 2722 125 立 麥卡1 投影 (D)14.哪兩種投影法中格陵蘭的面積最接近真實情況? (A)甲乙 (B)甲丁 (C)乙丙 D丙丁 (十) 15. 若要繪製各國使用 Instagram 的人口比例分布圖,最適合使用下列何種投影法? (AT (B)甲乙 (C)ZPJ D内工 (C)16. 在甲~丁四張圖中的粗線線段,何者並非大圓航線!? 距: 距離不足 (A) 甲 (B)乙 (C)丙 DT 大A夫婦參加蘇澳地區舉辦的半日生活節,拿到右方蘇 澳125.NER 的經建版地形圖進行活動,活動中有好幾個 關卡,各關也有關主進行解說,透過闖關活動可以讓參 加者更了解當地的發展脈絡。請問: S 5 D17. 大A拿到提示卡後,沿著臺九線從第一關蘇澳國 中前往第二關蘇澳海事職校,在不考慮任何自然 與人為因素耽誤的情況下,如果以步行時速5公 里/小時來計算,大A夫婦大約會花幾分鐘才能 抵達下一關? 334 335 ( (A) 6 (B) 12 ( (C) 23 (D 30 5 7 5 10.25 5 963 安國中, 斗法 三重 美泉 272 过国小 全世 336 337 0.2541) OS: 1.35% 30 359 (C)險 第三關蘇澳車站的關主出了一道超級難題,要回答出來才能拿到下一關的提示卡,題目是:「若以一 度緯度的經線長為110.7公里來計算,蘇澳車站的緯度最接近北緯幾度?」答案最可能為下列何者? (A) 22.8 (B) 23.5 (C) 24.6 (D) 25.1 50 (4) 19. 最後一張提示卡:「在最高的地方,迎來最後的禮物。」大A夫婦要前往的地方最可能位在何處 safizsoa 50 = = 12.5km 1 : 50 m ( (290.000 2,78 (A) (335350, 2721900) (B) (2721900 ,335330) (C) (2721800,336300) (D) (336300,2721800) 0 小瑜蒐集淡水河出海口與臺北港之地 甲 六塊厝漁港 質圖,如甲圖所示,若圖幅方格邊長 三芝區 IZ 乙 TES HEL2 于

求解1. b

B 3 Investigation 1 When a curve is increasing, we say that it has a positive gradient, and when it is decreasing we say that it has a negative gradient. Consider the curve y=xº shown in the diagram. 1 a Give the range of x values for which the gradient of the curve is i negative I ii positive iii equal to zero. b At which point is the gradient of the curve greater. A or B? The tangent to a curve at a point is the straight line that just touches but does not cross the curve at that point. N 1 y=p 1 2. 3 2 2 a On your GDC or other software, plot the curve y=x' and draw the tangent at the point (1, 1), as shown in the second diagram. b Zoom in to the point (1, 1). Factual What do you notice about the gradient of the tangent and the gradient of the curve at the point of contact? c Use your GDC or online software to draw tangents to y=x' at the points listed below and in each case write down the gradient of the tangent. 0 -1 1 2 X -1 0 2 2. 3 Gradient of tangent at x 2 d Conjecture a function for the gradient of y = x2 at the point on the curve with coordinates (x,x).