(請忽略右下角107題的算式) 請問我是哪裡算錯了呢? (標準答案0.89 我的~0.70）

Ans: D Category: Difficult Section: 16.5 hoo . 106. What is the pH of a solution prepared by mixing 50.0 mL of 0.300 M HCl with 450.0 mL) of 0.400 M HIO3? [K (HIO3) = 1.6 x 10-1 k= [CcHsCod ][CH3 C00H] A) 1.52 B) 0.80 C) 0.72 D) 0.89 E) 0.66 = 2.b [CH3C00-][ C6H-C001] Ans: D Category: Difficult Section: 16.5 CH₃COOH + H₂C00 (o

熱力學

-> 3. = The element oxygen was prepared by heating mero ercury(II) oxide: HgO(s) Hg(1) + (1/2)O2(g), AH 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions. The entropies of Hg, O2 and HgO are 76.02, 205.0 and 70.29 J/Kºmol, respectively. (A) 108 K, (B) 430 K, (C) 620 K, (D) 775 K, (E) 840 K.

求解 謝謝

The figure shows a three-particle system, with masses mu = 4.2 kg. m2 = 2.8 kg, and m2 = 7.3 kg. What are (a) the x coordinate and (b) the y coordinate of the system's center of mass? 13 2 1 x (m)

水文學——降水與損失 如圖，請問有人知道這兩題該怎麼算嗎？ 翻遍教科書教過的內容根本沒想法⋯

> 0 2-14 有一矩形集水區,其四個角落的座標分別為(0,0),(0,10), (14,10) 和 (14,0)。集水區內設有四個雨雨量測站,各測站所在位置的座標及降雨量如下 表。所有座標值的單位均為公里。試以徐昇氏法推算此集水區的平均降雨量 及逕流總體積(註:假設無任何降雨損失) o 雨量站位更 (4,2) (4,7) (11 , 7) | (11,2) 降雨量(cm) 1.5 2.0 2.4 4.3 ( 86 水利工程簡任升等)

光學第3題（2.38）請問如何解選項c🙏

3.00 85 09:49 ul. RES Optics Homework 1...748220677e2a.pdf ka KI : 。 Optics Homework 1 1. 2.2* Show that the function $(y, t) = (y – 40) is a solution of the differential wave equation. In what direction does it travel? 2. 2.6 How many wavelengths of a green laser (1 = 532 nm) can fit into a distance equal to the thickness of a human hair (100 um)? How far will the same number of waves extend if they originate from a micro- wave oven (v = 2.45 GHz)? 3. 2.38 Which of the following expressions correspond to traveling waves? For each of those, what is the speed of the wave? The quanti- ties a, b, and c are positive constants. (a) (z, t) = (az – bt)? (b) y(x, t) = (ax + bt + c)2 (c) 4(x, t) = 1/(ar? + b) 4. 2.43 Write an expression for the wave shown in Fig. P.2.43. Find its wavelength, velocity, frequency, and period, Figure P.2.43 A harmonic wave. I=0 40 100 300 500 -20 401 -60 0.66 X 10-15 (nm) 100 300 500 I = 1.33 X 10-15 (nm) o 二

我的實驗…. 求誤差原因可能是啥🤨

+ Z Ž T & F M 2 22 h 6,5 kcal/meler, 討論亥驗值理論值之間產生誤差的原因。

有人知道我是哪裡算錯嗎(ಥ_ಥ)

= 78, When the electron in a hydrogen atom falls from the n= 3 excited energy level to the ground state energy level, a photon with wavelength 2 is emitted. An electron having x this same wavelength would have a velocity of A) 7.10 x 10 m/s. D) B) 2.93 x 10 m/s. E) C) 2.93 x 103 m/s. Ans: A Category: Medium Section: 7.4 7.10 m/s. 3.00 x 108 m/s.

求解 謝謝

20 電路學精析 \\\ D 2:02 2A 2y 12 7A 2A \\\< 292 42 7A C (b) (a) 202 3.10 應用:(a) KCL 到超節點,(b) KVL到迴路 練習題3.3 試求圖3.11 電路的,和i。 題 求和io 11 492 6V 3.13 三 答:-400 mV, 2.8A. 14 V + 392 -\\\\ 1 + 在節點35 江 202 一八八一 VW 60 3.11 練習題3.3 的電路 或 4,試求圖3.12 電路的節點電壓。 接下來形 32 ANA-

第一題：有人能教我，這個電子填的順序要怎麼做？我的想法是同個方向的先填，再填反方向的，然後補滿嗎？ 第二題：請問遇到像紅色圈起來的滿的電子該怎麼做？是一整個填進中間空的圈圈嗎？ಠ~ಠ

N2 Atom Molecule Atom 2p 2p Energy TT 2p 2s 2s

求算法

CD 0 2. - 女用 has p5 Ca,样品。第去耳其东化 p出Ai质,取 2.8 m+牛的博 BOTTE, 4 x 2 = 7 13 2 1 12 m& INHCl, 1 t = 70 22 X 1 NHCl 2 2 2 450 ml 2# - 5, [123 + 1 = 72 = 3 m 2 , too 13 ml in HCl 477 $1 to 2 0.5 ml Et tě 60 70 22 76 0.5ml 17 18 %0 (10-100 ppm (a) ux AAST IT CA 5 2 1 5 EUR 7 2 7 7 6 28.2 ppm Ca , & 10) * 3 2 2 4 4 43 ob ca 5 2 2 x ppm & & TE?