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化学 高校生

解き方が分かる方、お願いします。m(_ _)m

EEモキモキギキモEi hese atoms were formed in the firstfew secods afler the Big Bang th event that marked | LegHmpimeoftheuniverwe HHowewcr thereisgttle free hydrogenon Fartb becausc Hmolecule mgYem hh moeat ueh high merge speeds at mey exape fom the Erths rmeYitr Most of the Earthis hydrogen is preeent as water either im the oceans or trappcd imside minerily ) mdclays Hydrogenisalsofoundimthehydrocarbons*! that make up thefossilfuelscoaL[ ん md naturml gas ILiaksenergytorelesee om these compounds Ifwe yaptto we SS a fel we must produce the gas using lcss energy than it generates when bumed. Beceuse water sits only combuston*3 prodoct_ hydrogen bnrms without poluting the ai Cr onibuitng signifcantly to the grecnhouse cfect*3 Coal[ A ] and natural gaN ae becoming increasingiy rare.but there isenough waterin the oceans to gencrate the hydrogen fuel we shall cver need. Hydrogen is obtaincd from water by elecrolysis** but that prOceSt requires electricity that has been gencrated esewhere。 Chemists are currently Seeing as Of using sunlight to drive the water-spitting reaction.the "decomposieon*" of ater eiemen Waterspbtting reacton : 2HzO(ianid) 一 2Hz(eas) Oz(gssy At present most commercial hydrogen is obtagted ss a byproduct*fof[ A ]refmmgYPma Sequence of two catalyzed reactons*9。 The gst is a reiorming reacton*io in which a jjdrocarbon and esm sre cnnweried into cartbon monoxide*! and hydrogen ovcr a nickl catalystYP: 。keforning reaction : CH(gss) +HkO(gas) 一 CO(gay) +3H(gy) The miiture ofproducts caled synthess gas "js the staring point for manufacture of many dher ompounds inciuding 。methanol Tbe reforming reacton is folowed by the shif reaction*1 im which the carbon monoxide in the synthesis gas reacts with more Water Shi reacion : CO(gms) +HLO(gas) 一 CO:(m) +Hktgs) Hydrogen is lso prepared pn smal amoupts. ja he laboratory by reducing hydrogen ions from strong acid with a metal (て Ama aaaL Janeu Chenical Prmepke: The Qwex cr msght 001 W.了Feman をCo から一 更して引有8) 1、 hydrocarbon : 庶化水素 2.combuston : 朱 3. greenhouse cert:温宅効果 4 Jayai : 電気分狂 5.photochemica 光化学的な 6.decomposiion 分角 yproduct: 硬生成物 8. rehing:柄製 9.caiyzed reacton :衣区応 10 ngreacdon : 折反計 1. cmrbonmonoridei 一誠化素 12.cataibet i角 。 15. synhess gms :全成ガス 14. shift reacton : シフト反応

未解決 回答数: 1
英語 高校生

丸は気にしないでください(><) 答え教えていただけると嬉しいです😭

間 JH OUT culture, where the use ot dictionaries 1S WideSDread。many people may have the impression that a word's meaning is simply its dictionary definition.A little thought should show however, that there must be more to meaning than this. It is true that when someone wants to find out what き Word means, an easy and practical way to do it is to look the word up ina dicionary. Most people in our caltare accept dictionaries as providing unauestionably authoritative accounts of the meanings of the words they define. [2] Thenoleof dictionaries/ in our society as authorities on meaning 1eads many people to feel that the dicionary dehnition of a word more accurately represents the word's meaning than does an individual speaker's nderstanding of the word. Keep in mind/ however。 that the people who write dictionaries arrive at their definitions by studying the ways speakers of the language use different words. Some dictionaries are relatively prescriptive\、 others more descriptive* but all must face the fact that a word means what people use it to mean。 There simply is no higher authority than the general community of native speakers of the language. This is obyiously the position one must take in descriptive analysis、 but even in prescriptive grammar, words cannot be given strange defimitions that dont correspond to actual uses of those words by the speech community. A word's meaning is determined by the people who use that word, not by a dictionary- [3] The iqea that a dictionary definition is all there is to a word's meaning runs into even more serious problems when one considers that im order to understand the dictionary definition of a word, one must know the meanings of the words used in that definition: For example. 下 the word ecfo7xere is defined as 'a blastomere that develops into ectoderm'、one must ee he 0 Me 0 Pd Side

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物理 高校生

セミナー物理299番です。 (3)の指針の部分には「並列なのでR「3」とC「2」の両端の電位差は等しい」とあるのでR「2」とC「1」の両端の電位差も等しいと思ったので解説にある(2)(ウ)の0.5V を全体の2.5Vから引いて2.0V(答え)として間違えるのは何故ですか。教... 続きを読む

PROCAbdN EE環 (の 5.を回じた下生で Gr. G 時しcr に電流は が財すると, CC.はをイーの人人基は 泊Lrくなる。 ⑬ mgD。 | 開くと, 所NR を周じての が誠れ | の下財の二板の間に電流が 1 なくなる。 く、 電圧は0 | @Rz. Ri 4 ( た中後, で R。 には電泊が AN 沈が湾れず, Ru ZSSRCUE 加わる。 Ri 電放は。オームの法則から Se。 ②⑲ ①) S,を開 十分に時間が経過した は充電を完了し。コンデンサーには電流が流れなく 電流はERごR。一Ri の経路を流れる(図1)。 だ 陸 れる電流 なは。オームの法則から s490字 10+20 R。の机の電位 『:(VJは, オームの法則から。 りらコ A ansx二| =太ー20X V (⑦) Ci、C。の全体に加わる電圧 『(V)は。 並列に接続されでいる R。 と R。 の全体に加わる電圧に等しい(図1) 本=(6。T 0ムー(20+30)X 0 2V はじめに電茶をたくわえていないコンデンサーの講接続では。各コ 〇の計算では 比を シンアンサーに, 電圧が電所容量の人数の比で加わるので、 C。 の両強の | えるので, 箇所9 電位差 (VIは。 位u(マイクロ)に机 1 3 る 10-* は。 省略して放 25x てLOTO4O 2%すー050V 算している。 (ご) 極板Aは電位が高い方なので。 PEN 電谷を 0(C)とすると。 公式 0=Cから、 0 X0.50=2.0x10 4C にたくわえられる秀電エネルギー ひ[JJは.

未解決 回答数: 2