学年

質問の種類

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

(A) (B) (C) (D) (E)に当てはまる前置詞をそれぞれ選べという問題です。 同じ語を2度使っていいです。 1of 2against 3to 4in 5on 6from 7under 8for 9up 10by 分かる方お願いします。

One of the greatest advances in modern technology has been the invention of computers、 They are already widely used in indusiry and in universites、and the tme has come when it iS possible even ( A ) ordinary people to use them as well Computers are capable ( B ) doing extremely complicated s work in all branches ot learning. They can solve the most complex mathematcal problems or put thousands of unrelated facts ( C ) order. These machines can 。ybe put to varied uses. For instance. they can count the number of Hmes the word “God" iS used io i the Bible、 Because they work accurately and at high Speeds. they ysave research workers years of hard work. This whole process by which computers can be used to work ( D ) us has been called automation. In the future, automation may enable human beings to enjoy far more leisure is than we do todayi computers (pare bound to have important social consequences. However, a sort ( E ) mystery surrounds computers、 This mystery iS partly a belief that computers are alLpowertul always faultless, and always accurate. Actually、the computer s only uses the data i receives as input and carries out operations 誠 iS ordered to perform、 Even people who use computers are often unaware that they themselves have become preoccupied with such a belief.

未解決 回答数: 1