大學普化 方智化學第六題

ow Na k 7 CI o se Br Chapter 2 化學鍵結 AH -C=CH 升二技插大 3. Brigma The bond between the carbon atoms in acetylene (HCCH) consists of ) (A)6 pi electrons (B)4 pi and 2 sigma electrons (C)6 sigma electrons (D)2 pi and 4 sigma electrons (E)3 pi and 3 sigma B) B 7.(BCDE) electrons. 【84 成大化學) 14.(B) 20.(C) 4. E ) (A)NO; [83 中興A] Which of the following has a triple bond? (B)O2 (C)C12 (D)CO; (E)CN-. Which one of the following element pairs has the lowest electronegativity (B) 27.(D) 34. (C) C) 41.(CD) 1 G difference and thereby is the least polan? Få 10 323.49 B) (84 5% *ILI) -) 48. (A) 6. NET 2 > 2 D) 58. (D) 62. (B) 69. NO+ D Obind (219) O 发 (A)SeF (B)Seci (QKBr (D/NaCl (E)KAT. 11 The compound Sio does not exist as a discrete molecule while CO2 does. This can be explained because ly 2 ep 3 15 aly zp (A)the Si–O bond is unstable (B)The Lewis structure of SiO has an even number of electrons (C)The SiO2 is a solid while CO, is a gas (D)the 3p orbital of the Si has little overlap with the 2p of the 0 (E)none of the these. V MOJT 515 1 - 4 40 (成大】 Yi (4 0 atom) (86 58*A] 7. In order to explain the valence observed for many of the elements 0 -Si-O in terms of electron configurations, it is often useful to look at electronis staies slightly different from the ground state in comparing 0-41-0 the ground state of boron with the state more useful to describe 0 bonding, the number of unpaired electrons goes from (A)1 to 2 (B)1 to 3 (C)3 to 4 (D)3 to 5 (E)none of the above. (集 (80 清大B) Which of the following compounds should not exist? ( (, 【85 成大A】 alf 566-32 Cle 32-8-24 2-89 cild 14 1 he atoms 83 中興A) mm bove. B 29 p. 1 1 be a ) \CHE > ? (A)Na,P (B)(NH4),PO, CIPO. DPH xH)POCI,, Maspal sput 中興A] Pa zorgt O 15412 = 1) O-P- 5 5+12= 1) 10-4 - 13 13-12=1 -- cl-P-0

請問這個怎麼判斷

6.) Rank the following compounds in order of decreasing (highest to lowest) dipole moment. H H H III A) I>II>III B) II/III>I C) I>III>II D) III>II>I E) II>I>III

第19題求解 看不太懂題目再問什麼🥺🥺

y your answer to part (a) using an appropriate table. 18. Construct a truth table for each of the following expressions. a) '(P10) b) "PA'Q c) (P-Q)('9- "P) d) P→( QR) e) (P)R f) '(P v Q R g) '((P v 9) + R) 19. Let P be the proposition 2 = 5. If possible, find a proposition such that PvQP Q is true. If possible, find a proposition such that PvQPAQ is false. 20. a) Write the truth tables for the expressions (PHQ) - R and PH( OR). b) Find propositions P, Q, and R such that one of the two compound proposi- tions (PH2)→ R and PH( QR) is true and the other is false. -

為什麼不是E

Q搜尋 07.pdf Chapter 7: Atomic Structure and Periodicity 1. When ignited, a uranium compound burns with a green flame. The wavelength of the light given off by this flame is greater than that of A) red light B) infrared light C) radio waves D) ultraviolet light E) gamma rays ANS: D PTS: 1 DIF: Easy REF: 7.1 KEY: Chemistry | general chemistry | atomic theory light | electromagnetic radiation MSC: Conceptual 2. Which form of electromagnetic radiation has the longest wavelengths? A) gamma rays

有關一些有機化學的問題，急求解拜託了

161 on B) Predict the major product for the following reaction and provide a stepwise curved arrow mechanism for the formation of the product. [6 x 4] Hint: 1) compound A is bicyclic. 2) a rearrangement will occur during the formation of compound B 5] i) H2SO4 compound A AICI: CI compound B [4] Brz/ FeBrz compound C 0_N OH iv) -NO2 compound D

求解

A Gas 1000 kg/hr 100% Liquid Solvents ***8.26 圖 P8 26 表示一從言 N. 及 NE: 之氣 體流中回收 NH3 之程序。 往上流經程序的氣體流中含有N,及 NH,但不浴S;而經程序往下流 出的液體流中NE 及液體S,但不言 N, 離開程序之氣體這中 NH3之質量 分率與離之液體B中 NH3質 量率有隙,其腺係為: Process 1000 kg/hr 10 mol% NH3 90 mol% N2 Gas P8.26 Liquid YB PS.26 中的数婆計算支流4及 B之流幸和花成·若以莫耳關係式 Asia - 21, 來取代之質量關係式,你 能解此題嗎?

大一普化5.50求解

3.43 AN 失 交 (方 N 全 只 憲 5.49 5,@ Re Problems 5 0t ln the stratosphere itadiation from the sun. and presSsure of ozone in Ths absSQTt Typieal the Stratosi Kandl0人10 am re spectively. How many ozone molecules are present in ]l.OL ofair under these conditions? Assuming that air contalns 78 percent N2, 21 pereemt O>, and 1 percent Ar, all by volume, how many mol- ecules of each type of gas are presentin 1.0Lotair 肚STP? A 2.10-L vessel contains 4.65 g ofa gas at 1.00 atm and 27.0。C. (a) Calculate the density of the gas In grams perliter. (b) What is the molar mass of the gas。 Calculate the density of hydrogen bromide (HBr) gas in grams per liter at 733 mmHg and 467C. A _ certain anesthetic contains 64.9 percent Co, 13.5 percent H, and 21.6 percent QO by masS. At 1205C and 750 mmHg, 1.00 L of the gaseous com- pound weighs 2.30 g. What is the molecular formula 9f 人he compound? Aecompound has the empirical formula SF4. At 20.0 0.100 g of the gaseous compound oceuplesa Volume of22.1 mL and exerts apresSure of 1.02 atm, What 1S its molecular formula? Dissolving 3.00 g of an impure Sample 0f calcium carbonate in hydrochloric acid produced 0.656L 人 carbon dioxide (measured at20.0C and 792 mmHg). Calculate the percent by mass of caleium carbonate in the sample. State any assumptilons, oleulafe the 和ass in orams Ofhydrogen chloride bro-

財管題目，求解😭😭😭

@ 今天,小陳正在慶祝她的 40 歲生日。她的願望是希望在 65 歲退休時,退休後 的 20 年間,每年生日時都能從儲著帳戶中提出$240,000。第一次提款時間是她 的 66 歲生日。小陳打算參加兆豐銀行零存整付專案 (年利率 2%) ,每年生日 時都存入一筆等額現金到此專案帳戶 ,做為退休基金之用。 (1) 如果小陳從 40 歲開始存款,一直到 65 歲 (最後一筆存款是 65 歲生日) ,請問 她每年要存入多少錢才能支應她的退休需求 ? (可先找出以下條件:預計幾年後 退休 ? 退休後每年可領金額 ? 退休儲蓄金可使用年限? ) (2) 假設小陳剛剛很幸運地中了大樂透,所以她決定要改變計畫,不要每年存入等 額的現金,而是在40歲生日時直接存入一大筆可以滿足她退休計畫的錢。請問 大樂透獎金至少要多少錢才夠呢 ? 如果大樂透獎金為$1,500,000 , 請問足以支 應退休計畫嗎?若是可以,請問小陳退休後每年可提領的金額增加多少? 若是不 足以支應,請問小陳每年要再存入多少錢才能支應她的退休需求? ( 假設不考慮 稅賦等影響因素 ) (3) 假設小陳的公司提出員工分紅計畫 ,每年會有$12,500 元分紅直接存在她的儲蔡 帳戶。此外,小陳預期在她 55 歲生日時,可從一筆家族信託基金領到$120,000, 到時她也會把這筆基金直接存到她的退休金帳戶。請問,若有分紅計畫和家族 信託基金的幫助,小陳每年應該還要存入多少錢,來支應她的退休計畫呢?

沒解答，想確認答案

hlorine.。”QOne compound contains talns 13.020%6 chlorine by mass. msS in the two compound? atomic_ number and its mass