解答は(１)C₃H₄ （2）n＝2です！ 解説お願いします！

<練習問題20> まとめ 次の各問いに答えよ。 アルケン・アルキン?? (1) ある炭化水素を標準状態で3.0Lとって完全燃焼させたところ、標準状態で9.0Lの二酸化炭素 が得られた。 また, 炭化水素 3.0Lに水素を付加させると、標準状態で6.0Lの水素が吸収され た。この炭化水素の分子式を答えよ。 (2) 5.60gのアルケン C, H2 に臭素Br, を完全に反応させたところ, 37.6gの化合物C, H2, Br2が得 られた。 このアルケンの炭素数nはいくらか。

7問わかる方教えてください🙏

17. I really must go and see the dentist. One of my teeth ( Dached has been aching aches is aching ) for weeks. (共立女子大) 18. 1() my homework for an hour when my mother came home. Dam doing have been doing was doing had been doing (大阪経済法科大) 19. She () in the accounting department for 10 years by the end of next month. @has worked will have been working has been working is working 20. When I woke up this morning, I decided I ( ) to get in shape. @want ②wanted 3 will want (国士館大) rode 11 8 (杏林大) had wanted 最頻 (大谷大) boil 21. Yesterday in science class, I learned that water ( ) at 100°C. was boiling boiling Ⓡboils 22. I will ask him about it as soon as he ( ) back. ①come ②comes 23. I'll be back before it ( ). Drain ②rains (国士舘大) will come would have come (立命館大) ③will rain would rain ☐ ☐

英文法･語法問題600です 5問教えてください

( 神奈川大) ④knowing id 13. My best friend and I ( ) each other since we were five. ①have known 2 know 3 knew 14. My friend from Africa () snow until he came to Japan. (日本大) ①has not seen 3 had never seen was never seeing to Joq will have s e seen mi ai odieX SC guiclem ai 15. When Mary was introduced to Mrs. Smith, she realized she ( 2 was meeting Dis meeting ③3 will meet ) her before. olidyed met? 4 had met (東海大 ①have lived 16. At the end of next month, we ( ) here for three years. 3 will have lived 2 live (立命館ナ will live becast at D 17. I really must go and see the dentist. ijem gnols ( Dached One of my teeth ( ) for weeks. 2aches (共立女子 3 has been aching is aching 法

至急です。試験範囲なので教えてください🙏🙏

第1章 □ 13. My best friend and I ( ) each other since we were five. (神奈川大) ④knowing ①have known 2 know 3 knew 24. If it ( ) on Thursday, we will not go to the beach. (西南学院大) ids ①rains would rain ③rained has been rained 14. My friend from Africa ( ) snow until he came to Japan. (日本大) ago. ①has not seen 3 had never seen Joq was never seeing will have seen al ofie S 25. I don't know if our teacher ( ①camera ②come ien ( ) back next week.d( 3comes (東北薬科大) 4 will come gablem at 時制 15. When Mary was introduced to Mrs. Smith, she realized she ( ) her before. elids ③will meet was meeting 3 Dis meeting □ 16. At the end of next month, we ( ) here for three years. had met (東海大) ①leave 3. (this stone adoleft 30 (立命館大) 27. I wonder when he ( ①come ) next. ①have lived live ③will have lived will live betes 26. Turn off the lights when you (br) the room. ( ③will leave cause it ) yded ed Oleaving D (日本大) smod v②coming (nedloqa had come \I\e will come (日本大) ☐ 4.1 was nger in the shopping mall. Dspoken by 17. I really must go and see the dentist. One of my teeth ( ) for weeks. @being spoken Dached 2aches 3 has been aching is aching 18. I ( ) my homework for an hour when my mother came home. (大阪経済法科大) gile@ Dam doing 2 was doing 3 have been doing had been doing (共立女子大) D gaiblod od lliw bled ad lliw blod Hiw 9 ) noitools Intone A 20 Baiblod ai① 5. The room should ( Obe kept ) clean at all times @batept) bear of seeded over Y are gnitisqet need asdⓇ gairinger ai 6. When I came other hat the 東北福祉大) s building Obeing built .89mit in1976e 19. She ( ) in the accounting department for 10 years by the end of next month. ①has worked gatiog me 7. Michael ( ③3 will have been working has been working is working (国士舘大) gnibrawe need asd go ) 1015xib adf to bebrown ead bbw gingle Player three wensed and @has selected has been selecting trode) 1.8 810 Writing 20. When I woke up this morning, I decided I ( ) to get in shape. 杏林大) )vedT 8. C ①want ②wanted 3 will want 4 had wanted sqft 18beads ( 最頻出の項目を、もう一度書いて覚えよう。 ) awon ai dtime.eM nd that ☐ 1. I got your letter last week. I'm sorry (didn't / haven't/back/I/ written). boiling 21. Yesterday in science class, I learned that water ( ) at 100°C. ①was boiling 3 boils (大谷大) (1語不要) (武蔵大) 4 boil ☐ 2. (began / begun / the class / already / had) when I arrived. (1) 22. I will ask him about it as soon as he () back. ⑪come 2 comes bib@ ③will come (国士舘大) wen & Jdgood o 4 would have come (国士舘大) bassaid □ 3. もし天気 (the weather) が良ければ, 私たちは明日泳ぎに行く。 (1語不要) (防衛医科大) 23. I'll be back before it ( Drain ). ②rains wad nodw exey evil Tol nobno ni ( 3 will rain 4would rain ed (立命館大) We (the swimming / weather / will/be/is/tomorrow/go/if) fine. 6

ワークブックフォープラクティスのlesson3のAとBの解答と和訳を至急教えてください！！！

A 次の各文の空所に入る最も適当なものを1つずつ選びなさい. 1. The sports program was watched ( ) millions of people. 1 for 2 with 3 by 4 at (東海 2. She has never ( ) of since then. I heard 2 be heard 3 been heard been hearing ( 3. He ( ) while he was playing rugby. ①injured 2 has injured 3 may be injured was injured (3) 4. I didn't recognize him because he was ( a dark suit. ④dressing with ①dressed in 2 dressed with 3 dressing in (関西

至急お願いします🙏 答え方教えてください🙇‍♀️

2. You look tired, what's wrong? I am (I'm ) 頭痛 3. What should you do if you have a headache? (頭が痛かったらどうすればいんですか?) 鼻水 4. If you have a runny nose, what could be the matter?(鼻水が出ている場合は何が原因でしょうか?) 学校 (何をすればいい?) 5. Nami has a fever, but she's at school. What should she do? She should 肌寒くなってきたよ、 どうしたの? 6. You're feeling chilly, what's the matter? 昨日お医者さんに行ったそうですが、 どうしたの? 7. I heard you went to the doctor yesterday, what's wrong? ちょっと顔色が悪いですね。 8. You look a bit pale. Is something the matter ? 今日 昨日 9. Do you still feel bad today? You went home yesterday. やけど 腕 10. How did you get that burn on your arm?

どのようにしてvA≠０を示せば良いですか？

48 * 傾角30° の滑らかな斜面上に,質量 M の小球Aが壁と軽いばね (ばね定数ん) で 結ばれ,静止している。 質量m (<M) の 小球BをAから距離 dだけ離して静かに 置いたところ, 斜面上をすべり降り、Aと 弾性衝突した。 斜面に平行に x軸をとり, m B 07 0 d M x A 30° はじめのAの位置を原点(x=0) とし、重力加速度をg とする。 (1) 衝突直前のBの速度u を求めよ。 (2) 衝突直後のA,Bの速度UA, UB を求めよ。 (3) A が達する最下点の座標 x を求め, UA, M, k で表せ。ただし,A が再び原点に戻るまでの間にBとの衝突は起こらないものとする。 (4) Aがx=1/2xを通るときの速さを求め,ひで表せ。 (E) (5)Aが初めて原点に戻ったとき,Bと2回目の衝突をするためにはd をいくらにすればよいか。 M,m,k,g で表せ。 ( + 学習院大)

Their route lay over some open ground which was covered in big stones. の lay over の意味を教えてください。

解き方教えてください😭

THEME 1-17 次の式を因数分解せよ。 (1)-7x2+1 (

間違えてるところを教えてください

2 次の文はS+V, S+V+C のどちらかを答えなさい。 ✗. Lucy became a nurse. 2. This book seems interesting, doesn't it? We walked around all night. 4. This melon tastes sweet. 5. Why did you run out of the classroom? 6. Please keep quiet for a while. かさい