訳してあるプリントを貰っても分かりませんでした。 すみません💦教えてください。

p.70 Let'sListen 4 (STEP 1) Attention, please. Because of yesterday's heavy rain, we have some changes to our train services. Some trains are late and some are not running. The Midosuji Line trains between Namba Station and Hommachi Station are not running because there are some electrical troubles. On two other lines, delays are expected. The Sennichimae Line is running fifteen minutes late, and the Yotsubashi Line is running twenty minutes late. Other lines are running on time. We apologize for the inconvenience. p.70 Let's Listen 4 (STEP 2) This is a repeat of our earlier announcement. Because of yesterday's heavy rain, we have some changes to our train services. Some trains are late and some are not running. The Midosuji Line trains between Namba and Hommachi are not running because we have some electrical troubles on that line. Buses are running between the stations, but delays are expected. The Sennichimae Line is fifteen minutes late, and the Yotsubashi Line is twenty minutes late. Other lines are running on time. We apologize for the inconvenience.

これ4Πr2でもとめられますか？

a=-3 (5) 直径が8cm の半球の表面積を求めなさい。 (元×4)+(4π×4)×。 -48π (cm) 2 ニ ber

答えだけでいいのでお願いします( ›_‹ )( ›_‹ )

Choose the suitable one. [→L.19] (1) You(should / would ) be quiet in this room. You can talk out in the hall. (2) I want to study abroad, so I ( must / mustn't ) study English hard. It's still very young. (3) Students ( must / mustn't ) walk on the grass. It probably took you (4) I(must / had to ) clean the classroom yesterday. - a long time. (5) Must I attend the meeting tomorrow? No, you( don't have to / mustn't ). (6) You are going to go swimming tomorrow, so you( should / shouldn't ) finish your homework today. (7) Kaori's umbrella is here. She ( must have / can't have ) taken mine. (8) I can't find my wallet in my bag. I (should have / may have ) left it at home. (9) The party was a lot of fun. You( must have / should have ) come. (100 Kenji ( can't have / must have ) told a lie. He is an honest boy.

なぜ(OH)2になるのですか？

H6S0+ +BaloH). 「十 → Ba So4 tHo0

これをもうちょっと詳しく説明してください! よろしくお願いします🥺

s 水 される化学変化から、電気エネルギーを取り出す 【燃料電池) く14> の受化 燃料電池 燃料が 仕組みの電池。有名なのは水素と酸素の化合によるもの。 水素の供給により、継続して電気エネルギーを取り出せることが大きな特徴。 く15> 【水素を使った燃然料電池の化学反応式】 2Hzt02→Hz0

なぜ酸の陰イオンとアルカリの陽イオンが結びついてできた化合物。と言う答えになるのかが分かりません！

中和と塩) 酸とアルカリを混ぜたときの中和の反応式は一般に次のように表すことができる。 く化学5-2へ く38> 塩 酸 アルカリ 水 く39> く40> 酸の イオンとアルカリの イオンが 結びついてできた化合物。 水にとけやすいものととけにくいものがある。

この式でなぜCa(OH)2になるのですか？ またCa(OH)2-とはならないのですか？

【炭酸と水酸化カルシウム水溶液の中和反応~】 CO2 + 石灰水 白色沈殿 H2O 白くにご H(アルカリ) 水酸化カルシウム (塩) 炭酸カルシウム (酸) 炭酸 <42> CO, + CaloH → cacos CaloHz→ 2 水に溶け麺 Co5 2- COs

これはH2O+nacl という書き方でもいいんですか？

(塩) 塩化ナトリウム 水 > Nack + H.o 水に際ける

答え教えて欲しいです！(；；)

Choose the suitable one. [→L.19] (1) You( should / would ) be quiet in this room. You can talk out in the hall. (2) I want to study abroad, so I ( must / mustn't ) study English hard. (3) Students( must / mustn't ) walk on the grass. It's still very young. (4) I( must / had to ) clean the classroom yesterday. It probably took you a long time. (5) Must I attend the meeting tomorrow? - No, you( don't have to / mustn't ). (6) You are going to go swimming tomorrow, so you( should / shouldn't ) finish your homework today. (7) Kaori's umbrella is here. She(must have / can't have ) taken mine. (8) I can't find my wallet in my bag. I(should have / may have ) left it at home. (9) The party was a lot of fun. You( must have / should have ) come. (10) Kenji ( can't have / must have ) told a lie. He is an honest boy.

同じ意味になるような単語いれる問題です ( )に何が入るか教えてください

1. Do you mind my using this room? = Do you mind ( OIuse this room? 2. Everybody else came before Jim. = Jim was the( ) personto come. 3. He is a man of few words. = He talks very ( ). 4. Who can trust such a dishonest man? = ( 5. What is your weight? = How much do you ()? )can trust such a dishonest man.