水上置換による気体の捕集の問題です。解き方を教えて欲しいですm(_ _)m

論述 SEC □18 水上置換による気体の捕集 アルミニウムと塩酸を反応させ,発捕集した水素 生した水素を水上置換で捕集した。 右図のように, メスシリンダー内 の水面を外の水面と一致させて気体の体積を測定すると, 500mLで あった。 気温を27℃, 大気圧を1.03 × 105 Pa, 27℃での飽和水蒸気圧 を3.0 × 10° Paとして、次の各問いに答えよ。 原子量: Al=27 (1)捕集した水素の物質量は何molか。 (2) 水素の発生に要したアルミニウムの質量は何gか。 (3) 下線部のようにして体積の測定を行った理由を簡単に説明せよ。 水

この問題はなぜこの答えになるのでしょうか？ 教えてください🙇‍♀️

(3) 3-27 =23-33 = (x-3)(x²+3x+9)

高校の教科書の問題です。今度テストに出るところなので答えを教えて欲しいです！

Vocabulary 10 Compound nouns 1 Write a word to make three compound nouns. mail 1 business fire man 2 Write a compound noun from Exercise 1. ESSO 2 pop 3 rock 4 ache lights 2 1 gas station phones movie break 3 beans shop return 5 parking single 6 cut 5 6 brush salon for a headache gas 7 train 8 bus cook 9 text note 10 set glasses screen light cop jam 70 Unit 10 Our interactive world 7 8 3 Answer the questions using a compound noun. 1 When do people take aspirin? 2 If you want a recipe, where do you look? 3 Who delivers the mail to your house? 4 If you park in the wrong place, what might you get? 5 What should you put on your skin before you sunbathe? 6 What can you watch at the end of the day? 7 What must you switch on when you are driving at night? 8. Where can you get gas?

英検準二級に関する問題です。 writingの添削をしてもらいたいです。 問題　あなたは、外国人の知り合いから以下のQUESTIONをされました。 あなたの意見とその理由を２つ英文で書きなさい。 語数の目安は５０～６０語です。 question Do you thknk... Read More

教えて下さい！

B. Complete the paragraph with words from the box. connection damaged improved normally sharp 1 2 In his book Musicophilia, brain scientist Dr. Oliver Sacks looked at the between music and the brain. He wrote about how music the lives of musicians, hospital patients, and ordinary people. Dr. Sacks also shared the experiences of different people. He gave an example of a man by a lightning strike, which-strangely-left whose brain was 3 him wishing to become a musician at age 42. Another interesting example was of a man whose memory 4 lasted only seven seconds, except when he listened to music. When this happened, his mind became very 5- with a near-perfect memory.

これの答えは、①でした。 私は過去と現在の仮定法混合文で②だと思ったのですが、なぜ違うのでしょうか？ ちなみに答えには鳥がいなかったら、世界は昆虫だらけになるだろう。という訳がされています。 どなたか教えていただきたいですm(_ _)m

059 00 超定番 ( ) birds, the world would be filled with insects. 1 Were it not for 3 Had there been 2 If it had not been for 4 If there were D

謎です🤔💭 解説お願いします🙇‍♀️

-B 60 1, 1, 1,233の6個の数字すべてを1列 に並べて6桁の整数をつくるとき、 次の問いに答 えよ。 区画 この に最 は、 るか (1) 整数は全部で何通りできるか。 (2) 偶数は何通りできるか。 (1)、 (2) (3) JUMP A, A, A, B, B, C, D の 7文字を1列に並べる

すいませんこの問題の答えは2なのですが、なぜ４は 不正解なのですか？ わかる方いたら教えてください🙇

059 ( BET 3 But 4 Not > birds, the world would be filled with insects. 1 Were it not for 2 If it had not been for ③ Had there been 4 If there were (福岡)

この問題が偽であるのはX=-1、0 になるからですか？

②(1)命題「ゾー7X-8:0ならばX8」の真偽は、 (x+1)(x-8)=0 9:-118 →〇 81×8 偽 である。

英文の添削お願いします🙏🏻 英検のエッセイ練習で書きました。

Topic Agree or disagree: People will stop subscribing to printed newspapers in the future. I agree with the idea that people will stop subscribing to printed newspapers in the future. I have two opinions why I think so. First of all, to print newspapers uses a lot of papers. They are made by wood that is important nature material. The kind of nature things has limit to use, so we should not use them too much. The plants also play role in the keeping air clean. This is the reason why I think it is bad for environment. Secondly, the printed newspapers are too big to carry. Thesedays we can get it online and we cand read it all the time wherever you are. For example on the train, in office, in café and so on. For these reasons, I think people will stop subscribing printed newspapers.