高校生　化学　化学結合と結晶　半径 化学の問題です。 下の写真の赤い部分がわかりません。回答を見る上での右にある図すらわかりません。どこで切ったのでしょうか 2、3枚目の写真は教科書で、とりあえずここらへんを見ていますが、何を使うかもわからないのでもしいらないページでし... 続きを読む

64. イオン結晶■ 図のように, ナトリウム Na の塩化物は塩化ナトリウム型, セシウム Cs の塩化物は塩化セシウム型の結晶構造をとる。 次の各問いに答えよ。 (1) 塩化ナトリウムの結晶における, Na+, CIの配位数をそれぞれ記せ。 (2) NaClの単位格子に含まれる Na+, CI- の数をそれぞれ求めよ。 10.564nm 塩化ナトリウム Na+ CI CI CI 0.412nm (3) Na+, Cs+ のイオン半径をそれぞれ求めよ。 ただし, CI-のイオン半径は 0.167nm, √3=1.73 とする。 (4) フッ化ナトリウム NaF とフッ化セシウム CsFの融点は, それぞれ993℃, 684℃で ある。 CSFの融点が NaF の融点よりも低くなる理由を60字程度で記せ。 ただし, NaF, CsFはともに塩化ナトリウム型の結晶構造をとる。 (10 東北大 改) 解説を見る 0.412 塩化セシウム (3) ナトリウムイオン Na+ のイオン 半径を x[nm〕 とすると, 塩化ナトリ ウム NaClの単位格子の一辺の長さ 0.564nm および塩化物イオン CI-の イオン半径 0.167nmから, xは図の ように表される。 したがって,次式が 成り立つ。 (0.167nm+x [nm])×2=0.564nm x = 0.115nm セシウムイオン Cs+ の半径をy[nm] とすると, 塩化セシウム CSCI の単位 格子の対角線の長さ/3×0.412nm および塩化物イオン CIのイオン半 径0.167 nm から, y は図のように表 される。したがって, 次式が成り立つ。 (0.167nm+y[nm]) x2=√3×0.412nm y=0.189nm (4) 同じ結晶構造をもつイオン結晶では, 陽イオンと陰イオンの間に 働く静電気力 (クーロン力)が大きいほど, 融点は高くなる。 静電気力は, 両イオン間の電荷の積の絶対値が大きいほど,また,両イオン間の距離 (陽イオン半径と陰イオン半径の和)が小さいほど, 強く働く。 フッ化セシウム CSFとフッ化ナトリウム NaF の結晶では, 電荷の積の ,0.167 * -Cs+ Na K 0.167 し √3x0.412 x0.167. 0.564 Cs+ y √2×0.412 単位はnm y CI Xx 0.167 CI¯ 単位はnm ① 対角線の長さは,単 位格子の一辺の長さをα とすると,次のように求 められる。 a 1 √2a 三平方の定理から, 1²=a²+(√2a)² 1= √3a ② 静電気力Fの大きさは 次式のようになる。 19₁x92 F=kx

高校2年生 コミ英 定期試験 プリント 今日高校の試験で出てきた長文です。 回答が知りたいです。よろしくお願いします( ᴗˬᴗ) ちなみに自分で解いたのは （28）③ （29）① （30）② （31）① （32）② となりました。

【2】 次の文章を読んで、簡題に替えなさい。 Many tourists in Japan are surprised by the number and variety of バリューション マシーン (28)vending machines they can see. Although the number is increasing, in 2013 おどろく ふえてけてる 2013年か there_were still more than Emillion vending machines in Japan. The most してども popular items sold are drinks. Other products include food, tickets, cigarettes, のみもの たべもの 4ケット magazines, newspapers and toys. おもちゃ ざっし しんぶん To find the origin of Vending machines, we must go all the way back to ancient Egypt. The earliest vending machine is described in a piece of text, people were able to receive *sacred water by putting a coin into a machine. ふきん せいすい さいしん These days, some of the latest technologies are used to make vending かえよ machines. For example, now we can buy both cold and hot drinks from the same あったかい クレジットカード machine. We can pay not only with coins but also with paper money, credit cards 払える つめたい and electronic money. We don't even have to push buttons or pull a lever. We can レバーをひく simply touch a computer screen that gives us step-by-step instructions. スクリーン Many foreign tourists are also surprised that vending machines in Japan are また not the target of crime. They contain many products as well as money. In addition, many of them are placed outside on the street without protection. But DETE the crime rate in Japan is much lower than that of other countries. And perhaps 他の国より もしかすると this is the main reason why Japan has such a large number of vending 理由 ひくい machines. *sacred water 聖なる水、聖水 とても なに てきせつ (28) vending machinesは何を指しているか。 適切なものをマークしなさい。 【理解2】 しょっきあら ① 食器洗い機 せんたくき どうはんばいき ②洗濯機 ③ 自動販売機 じどうかいさつ ④自動改札 つぎ ぶん ほんぶん ないよう ばあい ばあい 次の文が本文の内容に合う場合には ①を、合わない場合には②をマークしなさい。 (29) The number of vending machines in Japan is growing every year. 【理解 2×4】 (30) The world's first vending machine was made in Japan.② まいとし lited エジプト (31) Some vending machines accept credit cards for payment. ① (32) Vending machines are not allowed to be kept outside in Japan. 外 きょか

英語 高2 独立分詞構文で文頭が過去分詞（〜される）になる文の例教えて欲しいです。

至急よろしくお願いします😭😭できれば今日のお昼までに答えてくださる方を待っています＞＜ 英検2級の過去問です。(28)の答えが4なのですが、なぜそうなるのかわかりません、、どういった経緯で3人とわかるのか詳しく教えていただきたいです🙇🏻‍♀️ また、赤線部分のjoin ... 続きを読む

From: Amy Gordon To: All Customer Service Staff <customerservicestaff@g-kelectronics.com> Date: January 23 Subject: Staff changes <a.gordon@g-kelectronics.com> Dear Customer Service Staff, I hope everyone enjoyed themselves at the company party last Friday. I had a really good time. I think that the Grand Hotel was the perfect place to have it. Don't forget that some of you won prizes in the bingo games that we played. Steve Miller in the sales department says that he has the prizes, so if you won something, go and see him to pick up your prize. I have some other announcements as well today. Six new people will be joining our company next month. They've all recently graduated from college, and two of them will be coming to work with us in the customer service department. We'll have three new co-workers altogether because Kent Gardiner will also be moving to our department at the same time. He has worked in the design department at G&K Electronics for 10 years, so I'm sure that many of you already know him. There are a couple of other staff changes, too. Peter Smith, the manager of the accounting department, will be retiring at the end of next month. Peter has worked at G&K Electronics for over 40 years. There will be a short retirement ceremony for him in Meeting Room A at 5 p.m. on February 28. Also, starting next week, Rachel Martin will take six months off because her baby will be born very soon. Sincerely, Amy Gordon Customer Service Department Manager

英語の文法問題です。 解説お願いします。

............. Composition Rearrange the words within the parentheses to make sentences. 1. 決済システムは必要とされる社会基盤に関して異なる。 Payment systems differ (infrastructure / require / respect / that/ the / they / the to/ with ). Juods

教えてください！！

34. 彼と私とは赤の他人です。 177 AND AGENC (I / with / do / have/and/he/nothing to / each other) 〈中央大〉 Weisel 35. 昨年, 電子書籍の売り上げが従来の書籍の売り上げを上回った。→169 〈立命館大〉 Sales of electronic books were (books/higher/last / of / than / those / traditional) year. 36. 友だちがエマに子どもができたと教えてくれました。 →170 A (Emma/friend / a baby/ mine / told/ had / of / me / had / that) <龍谷大〉

TOEICの問題なんですけど、 9.わからない 10.A 11.B 12.C であってますか？

Choose the correct word (1) Richard didn't (A) talked (2) Your presentation (A) attract 10. Do they (A) provide (B) providing 9. The vice president's speech (A) lasts (B) lasting (C) last (D) be lasting (C) provides (D) provision 11. Last year, (A) announces 0 (B) announced the company (B) talk phrase is Part 1 Sentence Completion You will read some sentences. Each one has a space where a word or Choose the best answer to complete the sentence. (C) announcement (D) announcing always (D) were struggled about his work experience at the interview, (B) attracts the audience. 12. According to Mr. Henry, Dell Electronics (A) struggle (B) are struggle © (C) is struggling for 30 minutes. KUA information about their new product? art 2 Text Co ou will read a shor missing. For each Dear Ben, B Thank you ve is already f Thanks. Molly Bro Desmond 13. (A) or (B) h (C) 14. (A) (B (C (J A BCO that it would achieve remarkable cost reduction financially this year. ABCO 15. A B CO

9.10.11.12の答えとなぜそうなるのかを教えていただきたいですm(_ _)m 例えば、○○の後は△△になるとか

14 9. The vice president's speech (A) lasts (B) lasting (C) last (D) be lasting 10. Do they_WAY (A) provide (B) providing (C) provides (D) provision 1900 11. Last year, the company (A) announces (B) announced (C) announcement (D) announcing information about their new product? for 30 minutes. 12. According to Mr. Henry, Dell Electronics (A) struggle (B) are struggle (C) is struggling (D) were struggled A B A B that it would achieve remarkable cost reductions A B financially this year. A B CD C) (D

英作文の添削をしてほしいです！ 条件 ・80字程度 ・what job you want to get (就きたい職業) what your dream is (将来の夢)どちらか選択 ・why you think so ・what you must do to reali... 続きを読む

I want to become a surgeon or forensic I have two reasons. First, I'm interested in the structure of the human body. So, I want to dos an autopsy. In, order to do that, I thought it would be better to become a forensic. Second, I longed for drama. It's a drama of a genius surgeon called Dr. X. When I saw it, I wanted to be the same. Either way, I think it's necessary to study a lot, so I want to do my best (29

次のA, B, C, D, Eの内、化合物ってどれですか？ Dだと思うんですけど違いますか？

Q2. The diagrams represent the structures of five substances, A, B, C, D and E. A B D (a) Give one substance, A, B, C, D or E, that: (i) has a very low boiling point E H H-C-H -I H C a