一橋の問題です。「…？」とオレンジペンで描いたところがわからないので、どのような論理展開になっているか詳しく教えていただきたいです 学校が閉まっていて先生にも聞けず…助けてください🙇‍♀️

平面ベクトル、石は次の(A)(B)を満たす。 (A) 2-C² = b-c = -². (B) |a²| = 15²1 = (C1 = 1 (1)とは平行でないことを示せ。 (2) の値を求めよ。 - 上背理法

二つ目の式に、反応式を読み取ると硝酸銀のmolはクロム酸カリウムのmolの2倍になると書いているのですが、反応式ではクロム酸イオンと硝酸銀の係数比が1:1なので反応量も1：1になるんじゃないんですか？

行うことで Ag+ Al3+ Cu2+ Fe3+ K+ Zn² ろ過 沈殿 A AgCl↓(白) Al3+ Cu²+ Fe3+ K+ Zn²+ 沈殿 B 沈殿 D CuS ↓ (黒) を含む水溶液 HCI を加える (「現ナマで苦労する」 が沈殿する) ろ液 Fe(OH)3 ↓ (赤褐) イオン化傾向 Sn以下 液性に関係なく沈殿する | HCI 酸性で H2Sを通じる (Fe3+はFe²+に変化する ろ過 沈殿 C AI (OH)3 (白) Fe(OH)3 ↓ (赤褐) 前の操作で HCI を 加えているので ろ過 A13+ Fe2 9 ■2+K+ Zn²+ ろ液 [Al(OH)4]¯ 煮沸して, H2Sを除く HNO3 (希) を加える (Fe2+ を Febに戻す NaOH水溶液を過剰に加える (「ああすんなりと溶ける」に注意する) ろ液E 酸化剤 NH3 水を過剰に加える イオン化傾向 Mg 以下が沈殿するが、 「安藤さんのあには銀行員」に注意する) ろ液 ろ過 K+ [Zn(NH3)4]2+ a 本問では, 沈殿 A (AgCI↓), 沈殿 B (CuS ↓), 沈殿D (Fe(OH)3 ) ([Al(OH)4]-) として分離できている。よって, 6種の金属イオンのうち水溶液ア には Ag+, Cu²+, Fe3+, Al3+ ( 4種類)が含まれており, K + と Zn²+が含まれてい ない。 b沈殿D は Fe(OH) 3 ↓ なので, Fe3+ が含まれている。 思考力のトレーニング 3 難 クロム酸カリウムと硝酸銀との沈殿反応を調べるため, 11本の試験管を使い, 0.10 mol/Lのクロム酸カリウム水溶液と 0.10 mol/Lの硝酸銀水溶液を,それぞ れ表に示した体積で混ぜ合わせた。各試験管内に生じた沈殿の質量 [g] を表す グラフとして最も適当なものを、次の①~⑥のうちから1つ選べ。 ただしH=

硝酸銀の係数が1なのでクロム酸カリウムと同じ物質量になると思ったのですが、二つ目の式で×2されていました。理由を教えて頂けると嬉しいです

200 b沈殿D は Fe(OH) 3 ↓ なので, Fe3+が含まれている。 思考力のトレーニング3 C クロム酸カリウムと硝酸銀との沈殿反応を調べるため, 11本の試験管を使い、 0.10mol/Lのクロム酸カリウム水溶液と 0.10mol/Lの硝酸銀水溶液を,それぞ れ表に示した体積で混ぜ合わせた。各試験管内に生じた沈殿の質量 [g] を表す グラフとして最も適当なものを、次の①~⑥のうちから1つ選べ。 ただしH= KKH 難4 ATTT $19.4 FFFF

！！！至急お願いします！！！ 青い印のところが分からないので解説をお願いします🙇

360 log 20 80 ここで よって = log₂80 log₂ 20 log₂ (2²×5) role 20213011 4log₂2 + log₂5 4+ log₂5 2log 22 + log25 2+log25 log₂5= log₂ (2¹x5) 01 (2) log 20 80 log 35 log32 Bols (1) ● = log₂3 log35 = ab 4+ ab 1082080=2+abg (1

この問題の答えと解き方を教えていただきたいです

[2011 広島大学」 a,b は定数で, a>0とする。 2次関数f(x) = ax2-2x+bの定義域を1≦x≦2 とし f(-1)<f(2) を満たすとする。 関数 y=f(x)の値域が −1 ≤y s7 であるとき,定数 α, の値を求めよ。

英語の長文読解です 分からないので教えて欲しいです、、、

Chapter Reading 12 r 10H 8-8.6 6 4 2 3.7 2 The Number of Books Read in a Month in Japan 1.7 10.0 9.9 4.2 19 3.7 1.8 10.5 10.1 42 4.1 11.4 114 112 3.9 1.7 1.6 1.6 2 時制 文化 Time 30 minutes 4.0 15 4.2 1.4 111 9.8 4.5 4.3 1.5 13 0 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 (年) 200 words Elementary school students Junior high school students High school students Reading can take you to new places. Books are small and light, but they can change your world. watching TV or using smartphones. However, most people spend more time Publishing companies* want people to read more books. Some of s them are trying new shapes of books. An American publisher* called Dutton* released mini books in October 2018. They are as big as a smartphone and as thick as a person's thumb. You can hold them in one hand and flip* the pages like a smartphone screen. Although they are new in the U.S., they have been popular in Europe for several years. 10 They are popular because they are light, cheap, and environmentally- friendly. * publishing company [] publisher [] flip ｢~をめくる」 bunko paperback [**] ⑧15分 Japan's book industry is also looking for new ideas. Book sales were more than ¥2 trillion in the 1990s. But now they are falling every year. Japan already has cheap and light books, such as bunko paperbacks*. 15 However, Japanese people are reading less than before. In 2016, almost 50% of university students said they read for 0 minutes each day. How can books become more popular in Japan? Dutton 「ダットン｣ A-6 A-7 A-8

写真の問題について質問です。 方べきの定理よりAH×HB……となっていますがどこに方べきの定理が使われるのか分からないので教えてください。

Nabor 14/101173 A a 0 ab H よって、方べきの定理より J B D 手順1) 長さaとbの線分を一直線に並べ、それを直径とする円をかく 中心をOとする 手順2)点を通る垂線をひき、円との交点をCDとする. AB 12 Anbaz? CH = HD 223. CH 11 AHX HB = CH HD ax b = CH | √√ ab = CH

べき は命令形となっているのですが、何故でしょうか？💦

あやのこうのさん み 左方の奉行は綾小路三位、右は催すべき由承る。 左方の世話役は綾小路三位が〔執り行い〕、右方は 〔オマエが〕執り行えとのことを作者が伺 言 2

✓をつけた問題について解説をお願いしたいです😭(選択肢で×をしているのは違うと分かりますが､他のものがなぜ違うかが分かりません💦)

2001 They will leave this country when the rainy season ℗ started 242 He's in Tokyo now. = He ( 2 has been 2003 John and Mary ( 205 ( Ⓒhave been knowing 3 were knowing 2004 Please call me if something (3 Ⓒhappening 3 happens to His uncle ( Ⓒhas died Ⓒ It has five years Ⓒ It has passed five years 4) since I came to this town. 0 still @has gone 2 2 3 will watch starts 0 My mother ( I Ⓒhad been cooking 3 cooked 007 She 4) when the telephone rang. is having breakfast would have breakfast would have been 3 will have been ) to Tokyo. ) each other since 1976. ten years ago. 2 died 2 3 will start is out ) this TV set. have known were known 2 happen to will happen to 4 2 There are five years It is five years had died has breakfast was having breakfast 008 They asked us to hire a new worker last week, but we haven't decided (3 ℗ already 3 yet 4 any more 09 I said to Janet, "Please lend me the DVD when you ( 2 ) it." would watch 2 have watched 4 will have watched I'm so glad I don't smoke any more! Next month it smoking. supper for two hours when I got home. 2 has been cooking 4 will have cooked 3 1/2 2 would be has been would start 4 is coming (東京電機大) has been died (見学園女子大) (大) (大阪産業大) ) ten years since I quit

ここだけ❔だったので教えてください🙇‍♀️🙇‍♀️😭

I finni <3> silt to nobieg odi mi sami lan 20 yw en nobing rid of omo of grine 10w7 1'abib ins) SAT One morning the Giant was lying awake in bed when he heard some lovely music. It was nabung end mi var li good of lloge s Teao bar i deflora really only a little linnet singing outside his window. matrica Tegio oft roda to nol bed "I believe the Spring has come at last," said Trobing sili ni zeng out moil to omes to woft fiflituned e nad w borsqged IndW (18 the Giant, and he jumped out of bed and looked out. utzon grigniz borcie il olos ni nobing di borsvoobris bomoold i nings bid bre nemblido odi zol yozilli ood lat s oni wang il What did he see? 1 S E He saw a most wonderful sight. In every tree that he could see there was a little child. The (ne qmo'e'inci adi bevol d trees were so glad to have the children back again that they had covered themselves with blossoms 2991 bre Rewal od bojom of new ad Comoonbib aane lodi bo w god 20111 and were waving (A)their arms gently above the children's heads. The birds were flying about and frot ogod tanto dello? odi bib talW SIE Todo ad mi sunaris A twittering with delight, and the flowers were looking up through the green grass and laughing. It 2007) ont to gnimozzold of T was a lovely scene, but in one corner it was still winter. It was the farthest corner of the garden, and in it was standing a little boy. He was so small that he could not reach up to the branches of AUTRICHEKESHO SOTH SEHEKAYET EIN ogbrit adi ni fistus (1) the tree, and he was wandering all round it, crying bitterly 10 The Giant's heart melted as he looked out. "How selfish I have been!" he said. di area hil olid on silt (S) 問