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化学 高校生

赤線のようになる、理由を教えてほしいです。

II 解説 これより平衡定数Kは [Hz] [I2] [HI] 2 K= COOH RUSKUT OH TRAVESER と = (2.84 × ≒0.144 0.14 COOH 利用した電気泳動による分離に関する問題である。 電気泳動という知られた操作とは いえ、問題の状況設定は,受験生にとっては、 ほぼ新しいものである。 さらに, グラフ = を作成することも必要であり, 状況把握も含め、時間内に処理する力が試されている。 SO (a) 問1 サリチル酸の電離平衡において, Kal= [HA-] [H+] OPTIONERY [H2A] =1.0×10-28 (mol/L) の電離定数の違いの理由、そしてその違いを OH = 1 -× 10-3) (2.84 × 10-3) 3 (4.32 ×10-3)2 [A-][H+]=1.0×10−1 Kaz= -13.4 (mol/L) [HA-] が成り立つ。 今、pH=3.8⇔ [H+] =10-38 (mol/L) のとき,これを上式に代入すると, [HA-] Kal [H2A] [H+] & [A²-] K₁210-13.4 [HA-] [H+] 10-3.8 [HA-] α≒ [H2A] + [HA-] 10-2.8 10-3.8 -=10 1 + 9.6 =10-9 となるから,第二段階の電離による [A²-]は極めて小さく無視できる。よって, サ リチル酸の第一段階の電離度 α は 11-01 [HA-] [H2A] [HA-] [H2A] & HO- ! 01 1 - 117- 10 1 + 10 ≒ 0.9090.91 なお [HA-]/[H2A] 10 はH2A と HAが1:10 で存在することを意味するので、 全体 1 + 10 の中で 10 が電離していると考えるとより速く計算できるであろう。 問2 ベンゼン環に2つの同じ官能基-COOHと - OH が結合したものであるのに,

解決済み 回答数: 1
英語 高校生

この問題の答えを教えてください🙏

【ⅢI】 次の(A), (B)の設問に答えよ。 (A)14点,(B) 6点) (A) 次の英文を読んで下の設問に最も適切な解答をせよ。 特に指示のない選択式の設問は記 号を1つ選んで答え, "You may choose more than one option." と指示のある設問に対して複 数の記号を選ぶ場合は, アイウエオ順に解答すること。 Mike: Hello Alex, long time no see! Alex: Hi, it's been almost two years since we last met each other! How were you doing? Mike: Until recently, I was frustrated that I could not meet my friends at university, but I was able to spend more time with my family, so I was okay. By the way, how did you like the online classes? Alex: Personally, I did not like them. It was difficult for me to maintain my concentration at home. Also, I could not resist the temptation of using my smartphone, because there was no supervisor at home who checked whether I was working hard or not. Mike: If you use your phone during class, the professor will definitely tell you off! Mo Alex: Another reason why I prefer in-person classes is that I can ask questions or have discussions with my friends. In the Pre-covid-19 era, when I had questions, I went up to my friend Thomas, one of the best students in our faculty and he taught me everything that I did not understand. Mike: That was a huge issue for me as well. If I have questions piled up, then I am more likely to dislike the subject and have more anxiety towards it. So, my friends and I decided to have meetings online on a regular basis and this helped me to worry less about online learning. Alex: That was really ( 1 ) of you, I should have done that! So, are you in favor of online learning? Mike: Yes, although I have less face-to-face interaction with friends, I like online learning more because I do not have to spend a lot of time commuting to school. I live far away from university and it takes two hours for me to get here by train. B(A) Alex: Really! I did not know that, what time do you wake up? Mike: I usually wake up at 5 am. Alex: That's so early! What do you do on the train? Mike: I just do netsurfing and I do not feel that I use my time productively on the train. If we can continue to take online classes wherever we want, we can get more flexibility in our schedules, We won't have take the time to commute to the university to attend classes, or if we like it, we may even be able to watch lecture videos on our phones while traveling by train. Alex: I understand your opinion, but didn't you have any technical problems? Mike: I only had a few. Besides, most of the professors posted recorded videos of lectures after class. So, I watched the recordings when I missed some parts. Furthermore, I could study at my own pace and the videos allowed me to digest what I had learned. Alex: That's a good point, but it had an adverse effect on my learning. Mike: How? Alex: I started skipping my online classes because I thought I could just watch those recorded videos later. So, just before exams, I had so many videos to watch. Mike: Maybe, traditional classroom settings might be better for people like you. Alex: I think so. Oh, it's time to go to class. Mike: Oh, yeah, have a good day. Alex: You too! 問1 NOTES Topic of the conversation: (2) Standpoint Basis Mike (3) (5) Choose the best one to complete blank 1. 7 because cruel clever I kind 2 Choose the best title to complete blank 2. 7 How to get good results at university Technical issues in online classes Safe remote learning at home I Online learning or learning face to face Alex (4) (6) -11-

未解決 回答数: 1
英語 高校生

この問題の答えを教えてください🙇‍♀️

【Ⅲ】 次の(A), (B)の設問に答えよ。 ((A)14点,(B)6点) (A) 次の英文を読んで,下の設問に最も適切な解答をせよ。 特に指示のない選択式の設問は記 号を1つ選んで答え, "You may choose more than one option." と指示のある設問に対して複 数の記号を選ぶ場合は、 アイウエオ順に解答すること。 Mike: Hello Alex, long time no see! Alex: Hi, it's been almost two years since we last met each other! How were you doing? Mike: Until recently, I was frustrated that I could not meet my friends at university, but I was able to spend more time with my family, so I was okay. By the way, how did you like the online classes? Alex: Personally, I did not like them. It was difficult for me to maintain my concentration at home. Also, I could not resist the temptation of using my smartphone, because there was no supervisor at home who checked whether I was working hard or not. Mike: If you use your phone during class, the professor will definitely tell you off! Hot Alex: Another reason why I prefer in-person classes is that I can ask questions or have discussions with my friends. In the Pre-covid-19 era, when I had questions, I went up to my friend Thomas, one of the best students in our faculty and he taught me everything that I did not understand. Mike: That was a huge issue for me as well. If I have questions piled up, then I am more likely to dislike the subject and have more anxiety towards it. So, my friends and I decided to have meetings online on a regular basis and this helped me to worry less about online learning. Alex: That was really (1) of you, I should have done that! So, are you in favor of online learning? Mike: Yes, although I have less face-to-face interaction with friends, I like online learning more. because I do not have to spend a lot of time commuting to school. I live far away from university and it takes two hours for me to get here by train. Alex: Really! I did not know that, what time do you wake up? Mike: I usually wake up at 5 am. ant mo Alex: That's so early! What do you do on the train? Mike: I just do netsurfing and I do not feel that I use my time productively on the train. If we can continue to take online classes wherever we want, we can get more flexibility in our schedules, We won't have to take the time to commute to the university to attend classes, or if we like it, we may even be able to watch lecture videos on our phones while traveling by train. Alex: I understand your opinion, but didn't you have any technical problems? Mike: I only had a few. Besides, most of the professors posted recorded videos of lectures after class. So, I watched the recordings when I missed some parts. Furthermore, I could study at my own pace and the videos allowed me to digest what I had learned. Alex: That's a good point, but it had an adverse effect on my learning. Mike: How? Alex: I started skipping my online classes because I thought I could just watch those recorded videos later. So, just before exams, I had so many videos to watch. Mike: Maybe, traditional classroom settings might be better for people like you. Alex: I think so. Oh, it's time to go to class. Mike: Oh, yeah, have a good day. Alex: You too! 問1 NOTES Topic of the conversation: ( 2 ) Standpoint Basis Mike (3) (5) Choose the best one to complete blank 1. 7 because cruel clever I kind 2 Choose the best title to complete blank 2. 7 How to get good results at university Technical issues in online classes Safe remote learning at home I Online learning or learning face to face Alex ( 4 ) (6) -11- 18

回答募集中 回答数: 0
数学 高校生

解答のOM⊥BCになる理由が分かりせん。教えてください💦

EBCに下ろした垂線を り,線分 CD が円の直径 p.406 基本事項 ① ② 円に関する定理や性質 (*) ある。) フェ 中点連結定理 コ点2つで平行と半分 DBC, ∠DACは半円の に対する円周角 問題は, △ABC が鈍角 三のときも成り立つ。 90° または ∠B=90° の 角形のときは (2) の四 できない。 利用)。 0 (TRIANO) も利用。 =∠CAHであ MAA 050 基本例題12 重心 外心垂心の関係 正三角形でない △ABCの重心G,外心O,垂心Hは一直線上にあって,重心は 外心と垂心を結ぶ線分を,外心の方から1:2に内分することを証明せよ。なお, 基本例題 71 の結果を利用してもよい。 p.406, 407 基本事項 ①1, ②, ④4 指針 証明することは,次の [1], [2] である。 [1] 3点 G, 0, Hが一直線上にある。 これを示すには,直線 OH上に点Gがあることを示せばよい。 それには, OH と中線 AM の交点を G′として, G′とGが一致することを示す。 [2] 重心 G が線分 OH を1:2に内分する,つまり OG: GH=1:2をいう。 AH // OM に注目して,平行線と線分の比の性質を利用する。 …… すなわち 練習 . 右の図において,直線 OH と △ABC の 中線 AMとの交点を G′ とする。 AH⊥BC, OM IBCより, AH// OM であるから AG' G'M=AH : OM 72 =20M:OMBI B MAD" +4BD"-2A (G) =2:1 SBD ⓘ TAM は中線であるから, G′ は△ABC の重心G と一致する。 よって,外心 0,垂心 H, 重心Gは一直線上にありA HG : OG = AG:GM=2:1> OG:GH=1:2 OPT" # C=AD'+12 検討 三角形の外心,内心、重心,垂心の間の関係 心,外心の性質から。 0. GH U18 08,201 2009 基本例題71 の結果から。 M A ①外心は三角形の3辺の中点を結ぶ三角形の垂心である (練習 72)。 円劇・阿 ②重心は3辺の中点を結ぶ三角形の重心である(練習70) 内 ③ 正三角形の外心,内心,重心,垂心は一致する (練習 71)。 したがって, 正三角形ではオイ ラー線は定義できない。 Acti (1) 検討 (この例題の直線OH) を 外心,重心,垂心が通る直線 オイラー線という。ただし 正三角形ではオイラー線は定 義できない。下の 検討 ③ 参 照。 (1) PUTO DAA △ABCの辺BC, CA, ABの中点をそれぞれL, M, N とする Oは 413 3章 10 三角形の辺の比、五心

未解決 回答数: 1
英語 高校生

ある塾の英語の長文テストなんですけど、問一の答えが順番に、3.2.4と書いてるんですが全く納得いきません。Part1が4でなく、3なのはまあ百歩譲れますが、Part3が4になる意味が分かりません。風力発電の環境面での利点なんて一文字も書いてない気がします 問題の作成ミスでし... 続きを読む

You are preparing for a speech about alternative energy forms. You have found a journal article about wind energy. You are going to read the article and take notes. Wind Energy [Part 1] Scientists are always looking for more sustainable and cost-effective forms of energy, and many people believe wind energy is the best option available. Wind is a product of heat from the sun, so the energy supply will never run out. Wind does not pollute the air, water, or ground as it produces energy. Another major benefit of wind energy is that it requires no water. In contrast, traditional forms of energy production all require water for cooling. Due to its efficiency, scientists have worked to increase the capacity of wind production units. They hope to develop wind energy into a large-scale alternative to fossil fuels. [Part 2] Wind energy can be produced using offshore wind or land-based wind. The primary benefit of offshore wind collection is that it is more efficient because offshore wind blows more consistently and with more power than land-based wind. To take advantage of the steadier wind, offshore wind production units are bigger and have more capacity. Therefore, the energy acquired from offshore wind can produce significantly more electricity than land-based wind energy. Wind production units located in the sea off the coasts of big cities can efficiently provide energy to many people, while land-based wind production units take up valuable land space and require complicated transportation efforts. However, since it is a newer technology, offshore wind energy is currently more expensive than land-based wind energy. [Part 3] Even though it actually has ancient roots, producing energy from wind is usually thought of as a modern alternative to burning fossil fuels. Initially, wind energy provided power for electricity. But during the mid-20th century, it was replaced by fossil fuel resources. Unfortunately, the pollution created from the burning of fossil fuels is a major cause of global warming. This has forced scientists to develop more sustainable and cost-effective forms of wind energy. Currently, most offshore wind resources are located in coastal waters which are too deep for current wind energy technology. However, engineers are working to develop floating production units that can withstand the hard environment of the ocean, such as storm waves, hurricane-force winds, and ice flows. These developments offer wind as an effective source of energy without damaging the environment. Complete the notes by filling in 1 to Outline: Part 1: 8 Notes

解決済み 回答数: 1