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化学 大学生・専門学校生・社会人

4番のBがどうしてもわからないので教えていただきたいです!Aはおそらくペンタジエンが対称的に2個くっついているものだと思います。

おり [V] 以下に記述した反応に関して、 問 1~5に答えなさい。 分子式 CoHo の化合物 (A) にアセチレンジカルボン酸ジメチルエステル MeO2CC=CCO2 Me を加え, 加熱すると Diels-Alder 反応が起こり、 生成物 (B) およびその構造異性体 (C) が得られた。 生成物 (B)には4種類のプロトンがあ り,生成物 (C) には7種類のプロトンがある事が, 'H-NMRから分かった。 各シグナルのケミカルシフト (8値、TMS 基準)とプロトン数を以下に示した。 (B): 6.02 (4H, vinyl-H), 3.56 (6H, methyl-H), 3.28 (4H, methine-H), 2.48 (2H, methine-H). (C): 5.83 (2H, vinyl-H), 3.72 (6H, methyl-H), 3.25 (2H, methine-H), 2.97 (2H, methine-H), 2.7 (1H, methine-H), 2.5 (1H, methine-H), 2.13 (2H, methine- H). 問1 化合物 (A) の不飽和度を答えなさい。 問2 化合物(A) の 'H-NMR では 3.1, 6.4, 6.6ppmに1:2:2の強度比の シグナルが,いずれも多重線として現れた。 プロトンデカップリング 13C-NMR でも3本のシグナルだけが現れた。これらのNMRデータから考えられる構造式を 2種類, 示しなさい。 (ヒント: 一方の構造は5員環を含み、 他方は6員環を含む) 問3 この Diels-Alder 反応生成物 (B), (C) は, 化合物 (A) 1分子に対して アセチレンジカルボン酸ジメチルエステルが何分子反応したものか答えなさい。 問4 実際には化合物 (A) は5員環構造を持つものであるが, その反応生成物 (B) の構造を示しなさい。 問5 反応生成物 (C) の構造を示しなさい。

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英語 高校生

英検2級のwritingです! 添削お願い致します!! 少しでも良いのでアドバイス頂けると嬉しいです!

以下の TOPIC について, あなたの意見とその理由を2つ書きなさい。 POINTS は理由を書く際の参考となる観点を示したものです。 ただし, これら以外 の観点から理由を書いてもかまいません。 語数の目安は80語~ 100語です。 解答は, 解答用紙のB面にあるライティング解答欄に書きなさい。 なお、 解答欄の 外に書かれたものは採点されません。 解答が TOPIC に示された問いの答えになっていない場合や, TOPIC からずれて いると判断された場合は, 0点と採点されることがあります。 TOPIC の内容をよく 読んでから答えてください。 contact 6 QUESTION 小学校 Do you think it is a good idea for elementary school children to have mobile phones? Point: convenience /(cost/ variety (Cost) v think that it is a good idea for elementary school children to have mobile phones. I have two reasons for my opinion. 23 9 First of all, they can keep in touch with their family. It is easy. And, they don't need als to their parents. letter to contact Second, children can buy mobile phones cheaply 75 So, they should to buy it right now. I think it wil (7 be useful for them. Because, 9 internet is developmenting now. 13 For these reasons, I think that it is a good idea for elementary school children to have mobile phones. (6 23+31+30+ 54+40 (94

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英語 高校生

この答えを教えて欲しいです。🙇‍♀️

Level Passage : 2:30 Lesson 5 Jet Reading 22 ⑤ Questions: 2:00 Compared to dogs and other pet animals, cats often have lots of freedom. Many owners let their pet cats go outside whenever they want to. But where do they go? Does your cat visit your neighbor's house for extra food? How far from home does your cat actually travel? Cat owners have been wondering about such questions for a long time. 5 To find out where cats go and what they do, researchers decided to track them by putting a GPS (Global Positioning System) device around their neck. It is well known that cats are natural hunters. They often chase and catch *wildlife, such as birds and other small animals. It was therefore believed Hoor war301 that cats may go far from their homes to hunt. However, the research showed some surprising facts about cat *behavior. It seems that most cats 10 don't travel very far from their homes. On average, they move around two houses away. Owners were *relieved to hear this result because it confirmed that their cats do not cross major roads. There was another interesting result. One female cat walked more than 1 kilometer from her home. When the owner checked her GPS data, they discovered that the cat had gone to their old house. It showed that cats remember the past longer and more clearly than we think.(219 words) *wildlife 44 *relieve ~を安心させる *behavior Infogt) A Choose the best options. (2 points x2) According to the passage, which of the following statements are true about cats? (Choose two options. The order does not matter.) so svom i da a. They enjoy more freedom than other pet animals. imove sill niw nuo exentabilt o b. A GPS device was put around a cat's tail by researchers. c. They go far from their homes to hunt wildlife. Sanino sasd Juoda su v d. The research proved that most cats cross major roads. of Inboq bow it bean 17 s e. They may remember the past more clearly than we expect. Bewe )( B Fill in each blank with a suitable word. (2 points x3) ******* ******** Many owners let their cats go (¹ ), but no one exactly knew where they went and what ) the cats by using a GPS device. they did. In order to find this out, researchers decided to (² maswid Bai As a result, they learned that most cats didn't travel very far from their homes. One cat, however, walked more than 1 kilometer from its home. It turned out that it had (3 shows that cats have a better memory than people thought. ) its old house. This result sal al commaly to pound How Judw grinidman [catch/ forgotten / visited / outside /track/inside] Time ☆ ~1:45 ~2:00 ~2:15 ~2:30 ~2:45 ~3:00-3:30 Reading Speed X WPM 125 109 97 88 80 73 63 /10 Name Class No. 10 2015

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