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化学 高校生

化学は反応式系が多くて分かりません。 例えばこれだったら電子の数を合わせて(?)一つの式にしますよね、でもほかの単元とかだとこれしてない気がします、ほんとに漠然とした質問でごめんなさい。 Googleとかで上手に調べることもできず、反応式系の作り方一覧とか知りたいんですけど... 続きを読む

「入試攻略 次の化学反応式を記せ。 (1) 銀に希硝酸を加える。 (2) ヨウ化カリウム水溶液に過酸化水素水を加える。ける天 (3) 硫化水素の水溶液に二酸化硫黄を通じる。 必須問題 への (2) ( 還元剤: Ag +) 酸化剤:NO3 Ag+ + e) x3 3Ag + NO3 + 4H+ + 3e + 4H+ HはHNO3 の電離によるものなので,両辺に3つ NO ... H+, NO3をHNO3, Ag+, NO3 を AgNO3とします。 3Ag + NO3 + 4H + + 3NO 24HNO3 → 還元剤: 21¯ +) 酸化剤: H2O2 + 2e 2I + H2O2 + 2H+ → I2 +2e- 答え (1) 3Ag + 4HNO3 (2) 2KI + H2O2 (3) 2H2S + SO2 NO + 2H2O 3Ag+ + NO + 2H2O ■ + 2H+ → I2 + 2H2O 2H2O 両辺に存在するH+ を消去します。 Mom 01.0. 3Ag+ + 3NO + NO + 2H2O 3AgNO3 I は KI, H+ は H2Oの電離によるものなので,両辺に2つの K+と2つの OHを加えて,K+, I を KI, H+, OH を H2Oとします。 (3) ( 還元剤: H2S - S + 2H+ + 2e-) ×2 +) 酸化剤:SO2 + 4e + 4H+ 2K + + 21 + H2O2 + 2H+ + 2OH → I2 + 2H2O + 2K+ + 2OH- 2H2O 2KI H2O が両辺に存在するので,これを消去し、 残った K+, OH は KOH と します。 2KI + H2O2 + 2H2O → I2 + 2H2O + 2K+ + 2OH_ 2KOH S + 2H2O 2H2S + SO2 + 4H → 3S + 4H + 2H2O I2 + 2KOH 3S + 2H2O を加えて, 3AgNO3 + NO + 2H2O

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英語 中学生

英語のリーディングの問題を、S V O C 、() 、→ などを書いていつも訳しています ՞ ՞ 文の構造をしっかり理解しようと思ってしているのですが、テストでだと時間的にやめた方が良いですか ?? 慣れてきたのか最初よりは書き込みも早くなったとは感じますが … ... 続きを読む

a a high school student in Japan> He is from Australia. He finds two of his friends, Hikari a (+"=> in their classroom and talks to them. of our S : Hi, Hikari, Takuma. What are you looking at? : Hi, John. We are looking at *results of a *survey about the school trip) O ↑ In the survey, 243 first-grade students(at our high school were asked the question: "Where you want to go on the school trip?" Look at this *graph. V : Oh, the most popular place is Okinawa. I understand that because we can swim in C beautiful sea and its culture is very interesting. Have you ever been to Okinawa? (1127 くどこ : Yes. I went there on an *elementary school trip and a family trip last year. My best me O s in Okinawa is *snorkeling in the sea. There were a lot of beautiful fish in the water, and S V excited when I saw them. I had a really good time during each of the trips. LEES くりつ) : I went there on the school trip when I was a second-grade student (at junior high s 12x During the trip, we didn't stay at a hotel. <+1>> : Oh, really? Where did you stay then? Sone houses くどこう : We visited some houses and stayed there. I stayed at Mr. Higa's house. He and his Cat=r=" were very kind and did many things for me. For example, they took me to some V places and made me some traditional dishes. I also had an experience (of taking care サトウキビ cane in their field. I had no chance to see sugar cane before coming to that field) S very interesting. Staying with Mr. Higa and his family is my best memory in Okinaw : Wow, you both enjoyed staying in Okinawa. I have become more interested in visi 動名詞 ↑ listening to your stories. 化現在完了形 S : I'm happy about that. If you visit Okinawa, you will like it very much, too. : Well, I've heard that a lot of students go to Kyoto or Nara on the school trip. But (Y" => S SV shows that only fifty students want to go there. I'm a little surprised about that. And V is more popular than Kyoto and Nara 最上 S : Look! Some foreign countries were chosen, too. And your country is the most them all) gift no : I'm happy about that. *Hawaii is also popular, right? 自然と同じくらい SV S V : Yes, it's as popular as Nara. A lot of Japanese people go there on their trips ev S V

解決済み 回答数: 1