急募 食用油のヨウ素価を測定するため、食用油にウイィス試薬を添加し、反応後に残存しているヨウ素をチオ硫酸ナトリウム溶液で滴定することとした。 この時、 使用したチオ硫酸ナトリウム溶液は0.１mol/L, Factor=0.9982であった。このチオ硫酸ナトリウム１ｍLと... Read More

吸光度法の計算問題なのですが、どのように計算していったら良いのか全く分かりません。教えていただけると嬉しいです…！よろしくお願いします🙇‍♀️

3 弱酸の酸解離定数Kaを吸光度法で求める方法に関する文章の 濃度 Cmol/Lの弱酸水溶液中に存在する弱酸分子(HA), 弱酸イオン (A) および水素イオン (H+) に適当な語句を入れよ。 の濃度を、 それぞれ, [HA][A] および [H+] とすると, CHA+[A] Ka= が成り立つから, pK を知るためには, [HA] [A-] (3) が成り立つときのpHがわかっていればよいことになる。 いま、この溶液のある波長における吸光 度4を光路長 lcmのセルを用いて測定するものとする。 この波長での光の吸収が溶液中の [HA] および [A-] のみに起因するものとし、 [HA] および [A] のこの波長におけるモル吸光係数をそれ ぞれ 81 および e2 とすると、 溶液中の[HA]に基づく吸光度 4 [HA] および溶液中の [A-] に基づく吸光 度A [A-]は, それぞれ, A [HA] A [A-] 表される。 また, = = Є1 = log Ka=pH- A=A[HA] + A [A-] であるから,式 (3) のもとでは,Aは1, 2, lおよびCを用いて, (1) (2) (4) (5) (6) A = 129 (7) で表される。 一方, pHが極めて低いとき ( [HA] >> [A-]) の 4 を A1, pHが極めて高いとき ( [HA] << [A-]) の 4 を A2 とすると, (8) (9) €2= が成り立ち, 式 (8) 式 (9) を式 (7) に代入することによって, 式 (3) は, A = (10) と書き換えられる。 すなわち, 実験では、濃度が等しいが pH が異なる酢酸溶液をいくつか調製 し、同一条件でそれぞれの吸光度を測定して, pH と吸光度の関係をプロットするし, 式 (10) の関係が成り立つときのpHの値を求めてそれをpKaとすればよいことになる。

分からないので答え教えていただきたいです、、

問題23456を60で割った余りは ア ア である.

BMD SFD のグラフについてです。 こちらのような単純梁の問題で、曲げモーメントとせん断力からSFD BMD 図を求めるのですが、解放が分かりません。 曲げモーメントの式とせん断力の式の解き方を教えていただきたいです。よろしくお願いします。 3枚目の写真の1番上の... Read More

4-D Wo AA 0/2 l 2 ▲ B Wo

こちらの穴埋め分かる方いらっしゃいますか？

[1] Monopoly Suppose a pharmaceutical firm as a patented monopoly that has a plan to supply a newly developed good q. This good requires R&D cost of k> 0 as a fixed cost but is supplied at a constant marginal cost of c> 0. Once launched in a market, the market demand is estimated as shown in (1) with a > 0. Then, answer the quizzes [1.1] and [1.2]. 4a ・(1) 3√9 [1.1] If the firm commercializes good q, how much would q and p be set? Select numbers appropriate to the blanks (i) - (iv) in (2). (iii) (i) • a C and P = (iv) . C (2) (ii) 9 = P = [1.2] Show an interval of k satisfying that the firm creates this market. Select numbers appropriate to the blanks (v) - (vii) in (3). (vii) (v) a = (0, (vi) . C ] (3)

英読解の問題です。 すっかり忘れてしまったため何も分かりません。 2問教えて欲しいです。お願いします><

2022 P=HT 6. 次のお知らせを読み、 (1) ~ (2) のA~Dで適切なものに○をつけなさい。 [4×2=8] TO: All staff From: Erin Liner, Manager Date: July 15 Subject: Our survey Dear all. We have finished reviewing the data which we received from the recent customer satisfaction survey. I would like to share the most important findings, and how we can improve on certain areas of our work. Overall, customers were happy with the quality of our service. the helpfulness of our staff, and the range of products we offer. However, there were some negative comments which we can begin to work on. A common complaint was that there are not enough foreign titles in the store, especially Japanese comics. I will ask John Calman to research some of the most popular series and make sure we start carrying them from the fall. As Gita Pradesh spent her college years in Tokyo, I will ask her to assist. Better signage was another thing which people wanted. They spend a lot of time looking for the right section and it frustrates a lot of customers. This is something we can improve immediately, so I will speak to Alice Moore today about making the signs easier to see, and adding more if necessary. Finally, we got some comments about having a small cafe in the store. Nowadays, people want to have a coffee while reading or browsing, and it could be a new source of profit. Mario Venetti will make a report on the feasibility and deliver it next month. Thank you for all your efforts in making us the best we can be. Erin Liner Manager (1) What is the purpose of the e-mail? (A) To ask staff to create survey questions (B) To share details of customer feedback (C) To inform staff of recent changes (D) To invite staff to apply for new positions (2) Where does Ms. Liner most likely work? (A) At a café (B) At a movie theater (C) At a clothing shop (D) At a bookstore 以

英読解の問題です。 すっかり忘れてしまったため何も分かりません。 3問教えて欲しいです。お願いします><

5. 次のメッセージを読み、 [4×3=12] (1)~(3) A~Dで適切なものに○をつけなさい。 Sarah Rogovin [09:20 A. M.] Good morning. Li Na and Dave. Could you let me know the latest on the Taipei trip? Li Na Tsai [09:25 A. M.] Everything is prepared at this end. I've booked a meeting room for three days, ordered refreshments, and arranged daily taxis to and from your hotel. Sarah Rogovin [09:28 A. M.] Fantastic. Did you remember that three people are vegetarian? Li Na Tsai [09:30 A. M.] Yes, they have separate meals. The price is actually a little lower for them. Dave Kaplan [09:31 A. M. 1 And I just confirmed the new flights for you and Chen Wang. Sarah. You're now flying direct from Singapore to Taipei at 6 P. M. on Sunday. My apologies again for the misunderstanding. Sarah Rogovin [09:34 A. M.] Thanks for sorting that out. Dave. This makes the journey much easier. Could you e-mail the electronic ticket to Chen Wang when you receive it, please? Dave Kaplan [09:35 A. M.] Consider it done. Li Na Tsai [09:37 A. M.] Sarah, I've arranged for a projector, but do you also need a laptop set up in the meeting room? Also, the staff there will give you an access code for the room; you may need to ask for it. a Wi-Fi signal Sarah Rogovin [09:40 A. M.] As you said previously that there's throughout the hotel you've booked, I'll use my own. Thanks again for your hard work, both of you. (1) Why does Ms. Rogovin ask about food? (A) She wants to eat in a separate room. (B) Her colleague forgot to order meals last time. (C) Some attendees don't eat meat. (D) She thinks the meals are too (2) What is suggested about the flights? (A) They are booked for Sunday morning. (B) The original booking was incorrect. (C) A discount was offered on the price. (D)) There will be a short stop on the route. (3) At 9:35 A. M.. what does Mr. Kaplan mean when he writes, "Consider it done" ? (A) He will forward a document. (B) He will call Mr. Wang. (C) He will reserve two seats. (D) He will order a taxi.

英読解の問題です。 すっかり忘れてしまったため何も分かりません。 4問教えて欲しいです。お願いします><

E 4. 次のメールを読み、 (1) ~ (4) についてA~Dで適切なものに○をつけなさい [2点 From: 121 To: Subject: Date: September 17 Dear Mr. Calms, We found the customer response to our new online game, ( 1 ) different from what we expected in many ways. For example, teenage boys have been our biggest market for our games. (2) Bizz Fighter is popular among both boys and girls. I have put a brief ( 3 ) of our survey on your desk. That included the market data in the survey as well as some other interesting purchasing trends. ( 4 ). I do think Bizz Fighter will only continue to increase in popularity. Sincerely, Gail Thompson (1) (2) Gail Thompson, Marketing Director Richard Calms, CEO Online Game (3) (4) (A) amaze A.N.) Consider it done. (B) amazement (C) amazingly (D) amazing (A) yet ((B)) to (C) either (D) from (A) itinerary (B) summary (C) lease (D) prescription As you said brevis e forgot to order meals fast (the (A) Please let me know your choice by September 30. (B) That is why I am requesting this extension. (C) We invite you to sample our other great online games. (D) I hope you have time to read it and get back to me. Bizz Fighter,

存在比の計算です。 なぜ、Kがアキシャル位を1と置くと、エクアトリアル位が2.4となるのでしょうか…。 計算の仕方を教えていただけると助かります💦 回答よろしくお願いいたします。

bromocyclohexaneのアキシャル体とエクアトリアル体の存在割合を計算 しなさい。 AE = — RT In (x) 代入すると､ -2000=-8.314×273 × In K I Br K [エクアトリアル体] [アキシアル体] [アキシアル体]=1 とおくと、 [エクアトリアル体] = 井となる。 ｢71」 は間違えで、「2.4」が正しいです。 K= Br

至急です‼️英文が合ってるか確認していただくだけで大丈夫です。長くてすいません。 ①One problem in the Tokyo metropolitan area is unopened railroad crossings. 首都圏で問題になっているのが開かずの踏切... Read More