大一的有機化學求解🆘

+ ABY CH3 Br 1. mechanism. 2. optically active? why?

想問第一題 答案為什麼是A?藍綠菌應該是在真核藻類前面吧

臺灣綜合大學系統111學年度學士班轉學生聯合招生考試試題 I. 科目名稱 普通植物學 ※本項考試依簡章規定所有考科均「不可」使用計算機。 類組代碼 科目碼 A05 A0501 本科試題共計6頁 Choose one best answer for the following questions (3 points for each question, total 90 points) 1. Which of the following is the probable sequence in which organisms evolved? [[A] Prokaryotic bacteria → eukaryotic algae → cyanobacteria→land plants [[B] Eukaryotic bacteria → cyanobacteria → eukaryotic algae→ land plants [C] Cyanobacteria → prokaryotic bacteria → eukaryotic algae → land plants [[D] Cyanobacteria→ eukaryotic algae → prokaryotic bacteria → land plants [[E] Prokaryotic bacteria → cyanobacteria → eukaryotic algae → land plants | 2. Respiration breaks down glucose and transfers its energy to: [ [A] carbohydrate. [[B]starch. [C] water. [[D]ATP. [[E] chlorophyll. actions among organisms, which of the following term with its definition is NC

第七題和第九題求解謝謝～～ （算不出來😅，然後第9題的小d是指哪一段😅😅） 答案 7.(a)3cm／(b)4.09×10^-24N 9.(a)1.44cm／ (b)less than

FIGURE 21.13 Problems 5, 6, and 7. 7M In Fig. 21.13, particles 1 and 2 are fixed in place on an x axis, at a separation of L = 12.0 cm. Their charges are q₁ = +e and q2=-27e. Particle 3 with charge q3=+4e is to be placed on the line between particles 1 and 2, so that they produce a net electrostatic force F3, net on it. (a) At what coordinate should particle 3 be placed to minimize the magnitude of that force? (b) What is that minimum magnitude? y 1 L 2 X FIGURE 21.13 Problems 5, 6, and 7. = 9H Figure 21.14 shows an arrangement of four charged par- ticles, with angle 0-30.0° and distance d=1.50 cm. Particle 2 has charge q: +8.00 x 10-19 C; particles 3 and 4 have charges 93-94 -1.60 x 10-19 C. (a) What is distance D between the origin and particle 2 if the net electrostatic force on particle 1 due to the other particles is zero? (b) If particles 3 and 4 were moved closer to the x axis but maintained their symmetry about that axis, would the required value of D be greater than, less than, or the same as in part (a)? sbul & to sigillum in bon 3 mi 5 w 081=0 Im haq to teds at an gnibnoq1109 noi d D 2 4 FIGURE 21.14 Problem 9. naviga Tinoms sized -x Sted) bubai) ab ziedw Som

想請教這題的B,C選項 當初選prophase是想說此時染色質會緊密纏繞形成染色體

13. During which phase of mitosis do the chromatids become chromosomes? Centriole 中心粒 (a) telophase (b) anaphase (c) prophase (d) metaphase ' Anaphase begins when the cc cleaved. This allows the two si of each pair to part suddenly. thus becomes an independen

為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.

初會ㄉ銀行調節表問題🥲 請問b,c小題要怎麼寫啊？我快居居了

1 Balance b/d " 7 B Man " 16 A Sun " 28 M Bai " 30 K Ng 2,379 The bank account of C Chan's business for June 2009 and the bank statement for the same month are as follows: 2009 Jun Cash at bank $ 2009 Jun 5 D Wong " 158 12 J Yau " 93 16 B Shek " 307 29 Orange Club " 624 30 Balance c/d 3,561 $ 150 433 88 57 2,833 3,561 Bank Statement Date 2009 Jun Details Dr Cr Balance $ $ $ 1 Balance b/d " 8 Cheque " 11 Cheque " 17 Cheque " 17 Cheque " 18 Cheque " 29 Cheque " 29 Standing order - Union Credit " 30 Credit transfer - RS Ltd " 30 Bank charges 2,379 Cr 158 2,537 Cr 150 2,387 Cr 93 2,480 Cr 433 2,047 Cr 88 1,959 Cr 307 2,266 Cr 44 44 2,222 Cr 70 70 90 90 2,312 Cr 2,242 Cr (a) Cross out all the items that appear in both cash book and the bank statement. (b) Prepare a bank reconciliation statement as at 30 June 2009. Start with the balance as per cash book (c) Update the bank account of C Chan's business and prepare a bank reconciliation statement as at 30 June 2009. (-24 (b) Bank Reconciliation Statement as at 30 June 2009 Balance per cash book add credit transfer less: Standing order Bank charges. Balance per bank statement less: check 3447 $ 90 Total 3,5615 40 (44) (70) (114) $3537 $2242 (624) (57)

求解第四題的旋轉體表面積（繞y軸）

revolving the given curve about the indicated Tb. Graph the curve to see what it looks ke. If the surface too. T c. Use your utility's integral evaluator to find t numerically. 1. y = tan x, 0 ≤ x ≤ π/4; x-axis 2. y = 3. xy = 1, 1 ≤ y ≤ 2; x², 0 ≤ x ≤ 2; x-axis y-axis V 4. x = sin y, 0 ≤ y ≤ π; y-axis 5. x1/2 + y1/2 = 3 from (4, 1) to (1, 4); x-axis 6. y + 2√y = x, 1 ≤ y ≤ 2; 7x=siny Ct y-axis

第二張圖片是b小題的答案 想請問為什麼Retained Earnings 會變₩1994 另外想請問Accounting Titles的順序是固定的嗎 謝謝🙏

E4.7 (LO 2) Je Ju Consultants had the following adjusted trial balance (amounts in thousands). ar boxeqang and oil (EO) Je Ju Consultants Adjusted Trial Balance For the Month Ended June 30, 2025 Prepare closing entries, and prepare a post-closing trial balance. s of boiply anotoupen Instructions Account Titlesi Cash on he Accounts Receivable ady Adjusted Trial Balance Debit of sad ton of Credit t bly 3,712 mos balirahows izud to saylana 3,904 weniged share Supplies Accounts Payable 480 ¥1,382 Unearned Service Revenue Share Capital-Ordinary Retained Earnings Tagbal 160 4,100 Jun1,660 Dividends 550 Service Revenue 4,300 foundent Salaries and Wages Expense bizi 1,260 Miscellaneous Expense 256 Supplies Expense Salaries and Wages Payable P1,900 (0.3) 11. 460 sola ¥12,062 ¥12,062 001-81 a. Prepare closing entries at June 30, 2025. b. Prepare a post-closing trial balance. FEW 00181 008 ona

想請教計算方法，目前求得莫爾比但後續處以0.18（化整數）時感覺很怪，題目要求120克pan的經驗式，但我化完整數後光是C+H前兩項的質量就會超過120克了，想請教各位如何計算

C z Hz N O S o f 3.44 Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H, N, and O. Deter- mine the percent composition of oxygen and the empirical formula from the following percent composition by mass: 19.8 percent C, 2.50 percent H, 11.6 percent N. What is its molecular formula, given that its molar mass is about 120 g?

請各位經濟學大大解答謝謝

三) 125美 每件!! 單性還 /天 元漲為 利用下表回答問題8至10。下表為電腦晶片 的需求表: 價格 (美元/片) 需求量 (百萬片/年) 200 250 300 350 400 50 45 40 35 30 MITSUBISHI 問題與應用 83 12. 當小明的所得為3,000美元時,他每個 月買4個麵包與12個甜甜圈。當小明的 所得為5,000美元時,他每個月買8個 麵包與6個甜甜圈。計算小明對麵包與 甜甜圈的需求所得彈性。 13. 下表為手機通話的供給表: 8. a. 當每片的價格由(i)400美元降為350 美元與由(i) 350美元降為300美元 時,總收益會如何變動? b. 在什麼價格下,總收益最大? 9.當平均價格為350美元時,晶片的需求 是有彈性、無彈性還是單位彈性的?用 總收益測試來回答問題。 10.當價格為250美元時,晶片的需求是有 彈性、無彈性還是單位彈性的?用總收 益測試來回答問題。 11.你對香蕉的需求價格彈性為4。當香蕉 的價格上漲5%時, a. 你的香蕉的購買量的變動百分比為 何? b.你對香蕉的支出會如何變動? 價格 (美分/分鐘) 10 20 30 40 供給量 (百萬分鐘/天) 200 400 600 800 a. 計算當價格由每分鐘40美分降為30 美分時的供給彈性。 b. 計算當平均價格為每分鐘20美分時的 供給彈性。 14. 根據關於含糖飲料的新聞中的經濟學, 回答下列問題。 a. 計算水之於含糖飲料價格的需求交叉 彈性。 b. 當含糖飲料被課稅後,總收益會如何 變動?