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化学 高校生

官能基 下の写真の(2)についてです。 解説では『①〜④の構造より、極性が大きい官能基が存在しない①を色素1と考えて良い』とありました。 極性が小さいほど上に行くのは理解したのですが、 ①〜④のうち、どうやって極性が大きい官能基があるない、を見分けられたのかがわかりま... 続きを読む

問4 次の文を読み、 (1)~(2) に答えよ。 薄層クロマトグラフィーを用いて、 ほうれん草に含まれる色素を分 離する実験を行った。 ジエチルエーテルでほうれん草から色素の混合 物を溶液として取り出した後、その色素混合液を図のAのようにシリ カゲルをコートした薄層プレートのある位置につけた。 その後、 薄層 プレートの下端を展開溶媒に浸すことで、 色素混合物が溶媒とともに シリカゲル上を上に向けて移動するのに伴い、 図のBのように各色 素が分離された。 シリカゲルの表面はシラノール基 (Si-OH) が大量 に存在しており、色素成分はシラノール基と相互作用しながら分離さ れる。 色素は色素混合液をつけた位置から移動した距離 (移動度) が大きいため、シリカゲルとの相互作用が[a]、極性の[b] 成分であると考えられた。 色 素2.3.4は色素1よりも移動度が小さいため、色素と比べてシリカゲルとの相互作用が [c]極性の[ d] 成分であると推測された。 また、ほうれん草の色素には、クロロフィル以 外にβ-カロテン、ルテイン、ネオキサンチン、ビオラキサンチンなどのカロテノイド色素が含まれて いることがわかっている。 色素Ⅰは最も移動度が大きかったことから、[e ] と考えられた。 ① β-カロテン H₂C CH₂ CH₂ CH₁ (1) 文中の[ ] [d] にあてはまる語句の組み合わせとして、 もっとも適当なものを次 の①~④のうちから一つ選べ。 ① a:強く b: 大きい c:弱く d: 小さい a : 強く b: 小さい d: 大きい 3 a: < c: 弱く C:強く c: 強く b 大きい b:小さい d: 小さい ④a: 弱く d: 大きい (2) 文中の[ ]にあてはまるものとして、もっとも適当なものを次の①~④のうちから一つ 9 CH3 CH₂ H.C. CH₁ A HC CH3 B 色素 色素2 色素3 ◯色 4 H₂C CH₂ HO ③ ネオキサンチン HỌC CHA HO CH₂ HO CH₂ c0 CH₂ H&C CH₂ ④ ビオラキサンチン CH3 CO CH3 CH3 CH₂ CH 3 CH3 CH₂ CH3 CH₂ H.C. CHI CH3 HC CHẾ HC- CH 3 HỌ CHÍ OH CH₂ H.C 0 OH LOH H₂C CH₂ 2 AC 濃 考

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英語 高校生

2を教えてほしいです💦お願いします🙇

英語 ( 70分) 1 次の文章を読んで 1~7の問いに英語で答えなさい。 It's Christmas Eve, December 24, 1914. The night is clear and cold/ Moonlight illuminates the snow/covered land separating the British and German trenches outside a small town in northern France. British military command feeling nervous sends a message to the front lines: it is thought possible the enemy may attack during Christmas or New Year. Extra caution will be maintained during this period. The military command has no idea what's really about to happen. Around seven for eight in the evening/ British soldier Albert Moren blinks in disbelief What's that on the other side? Lights flicker on./ one by one. Lanterns. he sees, and torches, and... Christmas trees? /"Stille Nacht, That's when he hears it - soldiers singing in German/" heilige Nacht." Never before had the Christmas music sounded so beautiful. I shall never forget it," Moren says later. It was one of the highlights of my life. Then, in response, the British soldiers start singing The First Noel." The Germans applaud, and counter by singing "O Tannenbaum." They go back-and-forth for a while, until finally the two enemy camps sing "O Come, All Ye Faithful" in Latin, together. "This was really a most extraordinary thing." soldier Graham Williams later recalled, "two nations both singing the same Christmas music in the middle of a war." Events just north of a small town in western Belgium go further still. From the enemy trenches, Corporal John Ferguson hears Someone call out, asking if they want some tobacco. "Come towards the light," shouts the German. So Ferguson walks out into no-man's land into the field between both armies. "We were soon speaking as if we had known each other for years." he later wrote. "What a sight little groups of Germans and British talking together almost as far as the eye can seel Out of the darkness we could hear laughter and see lighted matches.... Here we were laughing and chatting to men who only a few hours before we were trying to kill!" The next morning. Christmas Day, the bravest of the soldiers again climb out of the trenches. Walking past the barbed wire, they go over to shake hands with the enemy. Then they wave "come on!" to those who'd stayed behind. "We all cheered." remembered soldier Leslie Washington of the Queen's Westminster Rifles. "and then we all came out together like a football crowd." (A Gifts are exchanged. The British offer chocolate, tea and cakes: and the Germans share cigars, sauerkraut and schnapps. They make jokes and take group photographs as though it's a big./happy reunion/ More than one game of football is played./using helmets for goal posts. One match goes 3-2 to the Germans, another goes to the British, 4-1. In northern France/the opposing sides hold a joint burial service. "The Germans formed up on one side." Lieutenant Arthur Pelham- Burn later wrote./"the English on the other, the military officers standing in front, helmets off, heads bowed in respect. As their friends are laid to rest friends killed by enemy bullets - they sing in English "The Lord is My Shepherd" and the same song in German mein Hirt" their voices in unison. "Der Herr That evening, there are Christmas dinner parties up and down the lines. One English soldier finds himself invited into the German held zone to a wine cellar, where he and a soldier from southern Germany pop open a bottle of 1909 French champagne. The men exchange

解決済み 回答数: 2