đốt cháy 112 gam bột sắt trong bình chứa 22,4 L khí Oxi ở điều kiện tiêu chuẩn thì thu được a gam chất rắn X dùng H2 dư cho phản ứng với chất rắn X ở nhiệt độ cao thì thu đc b gam chất rắn Y và H2O . Xác định a và b
đốt cháy 112 gam bột sắt trong bình chứa 22,4 lít khí oxi (ở đktc) thì thu được a gam chất rắn X. Dùng khí Hiđro (dư) cho phản ứng với chất rắn X ở nhiệt độ cao thì thu được b gam chất rắn Y và nước. hãy xác định a và b
Môn Hóa nha
Đốt cháy hoàn toàn 80 gam pirit sắt trong không khí, thu được chất rắn A và chất khí B. Lượng chất A phản ứng hoàn toàn với 200 gam dd H2SO4 29,4 %( vừa đủ). Khí B trộn với 20,16 lít O2 ở điều kiện tiêu chuẩn , trong bình kín có chất xúc tác ở 400 oC , ap suất la 1atm. sau đó đưa bình về nhiệt độ ban đầu thì áp suất trong bình là 0,8 atm. Độ nguyên chất của pirit sắt là?
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anylglycylaspartylphenylalanylvalylalanylglycyllysylalanylleucyltyrosylvalylglutamylalanylargilanylarginyllysylhistidylisoleucyllysylutamyllysyllysylarginylalanylmethionymylvalylserylglutamylprolylaspartylisophylmethionyllysylaspartylaspartylglutucylthreonylaspartylarginylisoleucyllylysyltyrosylvalylhistidylarginylleucylrginylmethionylserylaspartylalanylglycnylglycylglycylasparaginylvalylserylthvalylglutamylglycylarginylaspartylvalycyllysyllysylglutamylvalylglutaminylvaarginylalanylvalylvalylglutamylphenylaylaspartylaspartylvalylaspartylalanylhylglycylisoleucylglutamylisoleucylaspalutaminylglutamylarginylhistidyllysyltnylisoleucylhistidylarginylmethionylpheonylarginylglutaminylserylaspartylalanylalanylvalylalanylglycylarginylasparlleucyltyrosylvalylasparaginylalanylpralylleucylglutaminylglutamylleucylglutminylserylglycyllysylprolylalanylarginnylisoleucylserylglycylarginylprolylglyptophyltyrosyllysylglutamylglutamylglycylphenylalanyllysylcysteinyllysylpheylglutaminylglutamyltyrosylthreonylleunylphenylalanylprolylglutamylaspartylaeinylglutamylalanyllysylasparaginylaspylthreonylserylalanylserylleucylserylvlvalylserylprolylaspartylglutaminylglulylprolylalanylisoleucylisoleucylthreoreonylvalylthreonylserylglutamylglycylalanylglutaminylcysteinylarginylvalylsylvalylseryltryptophyltyrosylseryllysyolylserylarginylphenylalanylphenylalanlphenylalanylglutamylaspartylthreonyltucylalanylglutamylalanyltyrosylprolylgyltyrosylthreonylphenylalanylvalylalanglycylglutaminylvalylserylserylthreonyglutamylalanylprolylglutamylserylisoleoleucylglutamylglutaminylglutamylisolenyllysylglutamylphenylalanylserylseryllutamylglutamylglutamylglycylleucylhisminylleucylseryllysylisoleucylasparagiucylleucylserylglutamylserylprolylvalyanylaspartylserylglutamyllysylglutamylphenylalanylisoleucyllysylglutamylvalyeucylserylmethionylglycylaspartylvalylnylvalylisoleucylglycylisoleucylprolyltryptophylphenylalanylphenylalanylaspanylprolylserylalanylaspartyltyrosyllysrtylglycylaspartylaspartylhistidylseryylalanylthreonyllysylleucylglutamylasphreonylcysteinylmethionylalanylserylasthreonylisoleucylcysteinylserylalanyltylseryllysylglycylglutamylglycylhistidonylglutamylserylalanylvalylalanyllysyylglycylprolylcysteinylprolylprolylhislleucyllysylprolylisoleucylarginylcystolylalanylisoleucylphenylalanylglutamytamylprolylalanylprolylthreonylvalylthutamylasparaginyllysylglutaminylleucylyrosylthreonylisoleucylisoleucylhistidlserylglycylthreonylphenylalanylisoleuutaminylarginylglutamylaspartylserylgllysylalanylglutamylasparaginylmethionyysteinylalanylalanylglutamylleucylleucthreonylaspartylmethionylthreonylasparyllysylserylthreonylprolylglutamylalanlprolylglutaminylthreonylprolylleucyllalanylleucylaspartylserylglutamylglutalphenylalanylvalyllysylaspartylthreonyucylisoleucylthreonylglutamylglutamylalseryltyrosylglutamylhistidylisoleucyllleucylserylserylglutaminylleucylprolyylleucylglutaminylserylisoleucylleucylylthreonylprolylglutamylserylthreonylateinylisoleucylasparaginylglycylserylinylprolylleucyllysylglutamylprolylseryeucylglutaminylisoleucylvalylglutaminyalanylseryllysylglutamylglycylisoleucymylprolylglutamylthreonylglutaminylalaglutamyllysylisoleucylphenylalanylprollglutamylglutaminylisoleucylasparaginyolylleucyllysylthreonylleucylleucylalaraginyltyrosylprolylglutaminylserylserionylhistidylseryltyrosylleucylthreonylylleucylserylleucyllysylglutamyllysylsparaginylarginylglutamylglutaminylargsylglutaminylglutamylalanylglutaminylslglutaminylserylleucylalanylglutamylgllglutaminylserylprolylaspartylvalylmetasparaginyltyrosylglutamylprolylleucylylcysteinylthreonylglutamylglycylglycymylserylalanylasparaginylprolylleucylgminylaspartylserylalanylvalylarginyliserylleucylarginylphenylalanylprolylleulglutaminylvalylleucylleucyllysylglutaaraginylvalylvalylmethionylprolylprolyylglutamylseryllysylarginylglutamylprolylglutaminylglutamylvalylglutaminylglllysylglutamylserylleucylleucylserylglglutaminylarginylleucylasparaginylleuccysteinylarginylalanylleucylglutaminyllglutaminylprolylglycylleucylphenylalainylasparaginylisoleucylglutamyllysylvlasparaginylisoleucylthreonylglutaminyucylmethionylcysteinylmethionyltyrosylserylvalylthreonylglutamylglutamylvalylglutamylaspartylvalylaspartylprolylgleucyllysylmethionylglutamylleucylarginylisoleucylisoleucyltyrosylglutamylgluylthreonylalanylglutamylglycylprolylarlycylalanyllysylthreonylserylleucylgluartylserylphenylalanylserylglycylserylsoleucylthreonylglutamylprolylglutamyllisoleucylserylthreonylglutamylglutamyaginylvalylglutaminylserylarginylvalyleonylprolylvalylthreonyllysylglycylvalspartylglutamyllysylglutaminylaspartylglutamylglutamyllysylglutamylglutamylsreonylglutamylglutamylvalylalanylthreotamylalanylglutamylglycylglycylleucyliprolylmethionylisoleucylhistidylthreonvalylserylglutamylglutamylglycylaspartnylthreonylserylisoleucylthreonylasparaginyltryptophyltyrosylphenylalanylglulylserylaspartylglutamyllysylphenylalapartylglutaminylasparaginylthreonyltyrartyllysylvalylasparaginylthreonylglutlglutamyltyrosylvalylcysteinylglutamyllglycyllysylthreonylalanylthreonylseryllysylarginylalanylalanylprolylvalylisutamylprolylleucylglutamylvalylalanylllphenylalanylthreonylcysteinylglutamyllasparaginylvalylarginylphenylalanylglalanylglycylarginylglutamylisoleucyltyeinylserylisoleucylarginylserylseryllyglutamylisoleucylleucylarginylthreonylylglycylglutamyltyrosylthreonylcysteinyltyrosylglycylserylvalylserylcysteinyylvalylthreonylvalylprolylglycylglycylleucylleucylprolylglutamylarginyllysylutamylvalylvalylleucyllysylserylvalyllmylglutamylglutamylglutamylprolyllysylglutamyllysylvalyllysyllysylprolylalanolylprolyllysylprolylvalylglutamylglutlvalylthreonyllysylarginylglutamylargiylthreonyllysylvalylprolylglutamylisolylleucylprolylalanylprolylglutamylprolnylglutamylvalyllysylthreonylisoleucyllprolylglutamylprolylthreonylprolylisoylvalylprolylvalylvalylglycyllysyllysylyllysylglutamylglutamylalanylalanyllylysylglycylvalylprolyllysyllysylthreonlalanylglutamylarginylarginyllysylleuccylglutamyllysylprolylprolylaspartylglnyltyrosylglutaminylleucyllysylalanylvlyllysylglutamylisoleucyllysylaspartyltamylserylglutamylphenylalanylvalylglylanylglutamylcysteinylleucylvalylserylhreonylthreonyltryptophylmethionyllysyeucylarginylglutamylserylprolyllysylhilanylaspartylglycyllysylaspartylarginycylaspartylvalylglutaminylleucylserylahreonylcysteinylvalylleucylarginylleucylthreonylserylthreonylalanyllysylleucrolylvalylarginylphenylalanylvalyllysyamylvalylthreonylvalylvalyllysylglycylserylcysteinylglutamylleucylasparaginyalyltryptophylarginyllysylaspartylglycysylprolylglycylarginylisoleucylvalylpylmethionylarginylalanylleucylthreonylspartylaspartylthreonylaspartylalanylgreonylvalylglutamylasparaginylalanylasysteinylserylserylcysteinylvalyllysylvnylaspartyltryptophylleucylvalyllysylpinylhistidylvalyllysylprolyllysylglycylalanylcysteinylaspartylisoleucylalanyinylisoleucyllysyltryptophylphenylalanlisoleucylprolylalanylglutamylprolylasmylisoleucylleucylarginylaspartylglycyucyllysylisoleucyllysylasparaginylalanoleucylalanylglutamyltyrosylalanylvalyylarginyltyrosylprolylalanyllysylleucylglutamylvalylglutamylleucylleucyllysyylthreonylisoleucyltyrosylglutamyllysyylaspartylalanylglutamylisoleucylserylylglycylglutaminyltryptophyllysylleucyinylprolylserylprolylthreonylcysteinyllglycylglycyllysylarginylphenylalanyllyllysylleucylaspartylglutaminylalanylgaminylalanylleucylasparaginylalanylisoylleucylthreonylvalyllysylglutamylisolanylalanylvalylprolylleucyllysylaspartrginylarginylglutaminylalanylarginylphcylthreonylarginylglutamylalanylasparaysylglycylprolylaspartylisoleucylisolenylalanylaspartylisoleucylisoleucylalaisoleucylleucylvalylisoleucylasparaginylaspartylaspartylglutamylglycylvalyltutamylglycyllysyllysylthreonylserylalareonylglycylisoleucylarginylleucyllysyucylglutamylaspartylglutaminylthreonyleonylalanylthreonylphenylalanylvalylcylutamyllysylmethionylhistidylvalylvalyinylaspartylalanyllysylleucylhistidyltcylisoleucylserylserylglutamylglycyllymylmethionyllysylglutamylvalylthreonyllglutaminylisoleucyllysylalanylglutamiylthreonylalanylglutaminylleucyllysylvlyltyrosylphenylalanylthreonylvalyllysylalanylvalylglutamyllysylaspartylglutteinylglutamylvalylseryllysylaspartylvlalanyllysylaspartylglycylglutamylglutlysyltyrosylserylisoleucyllysylalanylaoleucylleucyllysylisoleucyllysyllysylaylglycylglutamyltyrosylvalylcysteinylatyllysylthreonyllysylalanylasparaginylinylleucylisoleucylglutamylvalylglutamylglutamylvalylphenylalanylvalylglycyllalanylglutamylisoleucylglutamylleucyltidylglycylglutaminyltryptophyllysylleylthreonylalanylserylprolylaspartylcystamylaspartylglycyllysyllysylhistidyliylasparaginylcysteinylglutaminylleucylylvalylserylphenylalanylglutaminylalanalanylalanylasparaginylleucyllysylvalyleucylphenylalanylisoleucylthreonylproylphenylalanylglutamyllysylaspartylglulcysteinylglutamylvalylserylarginylglularginyltryptophylleucyllysylglycylthreonylglycylaspartylaspartylarginylphenlaspartylglycylthreonyllysylhistidylselalanylalanylphenylalanylglutamylasparnylphenylalanylglutamylalanylglutamylaycyllysylleucylisoleucylisoleucylglutalphenylalanylleucylthreonylprolylleucysylglutamyllysylglutamylserylalanylvalleucylserylhistidylaspartylasparaginyllphenylalanyllysylasparaginylaspartylgnylthreonylarginylserylvalylserylmethillysylthreonylhistidylserylisoleucylthylserylisoleucylaspartylaspartylthreonlylglutamylalanylmethionylglycylmethiocylthreonylvalylleucylglutamylglycylasonylglycyllysylleucylglutaminylaspartylysylaspartylglutamylvalylisoleucylleuucylseryllysylalanylaspartylalanylprolysylaspartylglycyllysylglutamylisoleuclanylvalylisoleucyllysylthreonylasparteucylisoleucylleucyllysyllysylalanylleylglutaminyltyrosylthreonylcysteinylasyllysylthreonylserylglycyllysylleucylainylglutamylisoleucyllysylleucylvalylalglutamylvalylmethionylglutamylthreonylalanylglutamylthreonylglutamylisoleuceucylhistidylalanylasparaginyltryptophnylleucylleucylglutaminylthreonylprolylysylglutamylglutamylglycyllysylisoleustidylasparaginylcysteinylarginylleucyycylvalylaspartylphenylalanylglutaminyerylserylalanylhistidylleucylarginylvaglycylleucylleucylarginylprolylleucyllnylalanylglycylglutamylthreonylalanyltlglutamylleucylseryltyrosylglutamylaspyptophyltyrosylleucyllysylglycyllysyllyllysylvalylvalylprolylarginylserylgluylleucylthreonylleucylarginylaspartylvylglycylglutamylvalylglutaminylleucyltnyllysylthreonylhistidylalanylasparagiamylprolylprolylvalylglutamylphenylalalaspartylglutaminylthreonylvalylglutamlvalylleucylglutamylcysteinylglutamylvalanyllysylvalyllysyltryptophylphenylaglutamylisoleucylleucyllysylseryllysyllanylaspartylglycylarginylvalylarginylpartylcysteinylthreonylprolylglutamylalthreonylcysteinylaspartylalanyllysylaylcysteinylasparaginylleucylasparaginylglutamylphenylalanylleucylarginylprolminylvalylarginylglutamyllysylglutamyllutamylcysteinylglutamylleucylserylargalyllysyltryptophylphenylalanyllysylaslysyllysylglycyllysyllysyltyrosylasparylalanylvalylarginylisoleucylleucylvallleucylleucylaspartylaspartylglutamylalutamylvalylarginylthreonylalanylarginlthreonylvalylleucylglutamylglutamylglyllysylasparaginylleucylalanylasparagimylthreonylaspartylthreonylisoleucyllylseryllysylprolylglycylalanylglutamylvglycylaspartylglutamylglutamylisoleucyinyltyrosylglutamylisoleucylleucylthreylisoleucylleucylvalylisoleucylglutamilutamylaspartylalanylglycylasparaginyleucylprolylserylserylarginylthreonylastidylglutamylleucylalanylalanylglutamylylglutaminylasparaginylleucylglutamylyllysylalanylglutamylphenylalanylvalylutamylserylphenylalanylprolylvalylglutlaspartyllysylthreonylleucylglutamylseylvalylisoleucylalanylaspartylglycyllyllysylaspartylalanylthreonylleucylglutyltyrosylvalylvalylmethionylvalylglycynylhistidylleucylthreonylvalylisoleucylvalylvalylprolylleucyllysylaspartylthaminylglutaminylglutamylvalylvalylphenlvalylasparaginylthreonylglutamylglycyenylalanylarginylasparaginylglutamylglpartylserylseryllysyltyrosylisoleucyliylleucylvalyltyrosylthreonylleucylargistidylleucylaspartylaspartylglutaminylvalylserylleucylthreonylasparaginylhisylvalyllysylserylalanylalanylasparaginmylglutamylaspartylleucylarginylisoleupartylisoleucylglutamylthreonylmethionnylphenylalanyltryptophylcysteinyllysyaginylvalylthreonylleucyllysyltryptophtamylglutamylvalylprolylphenylalanylasyrosylarginylvalylaspartyllysyltyrosyllisoleucyllysylaspartylcysteinylglycyllycylglutamyltyrosylisoleucylvalylthreysylserylvalylalanylglutamylleucylleucrolylthreonylglutamylphenylalanylvalyltylglutaminylthreonylvalylthreonylglutnylvalylphenylalanylserylcysteinylglutylalanylasparaginylvalyllysyltryptophyinylglutamylisoleucyllysylglutamylglyclglutamyllysylaspartylglycylserylisolesoleucyllysylaspartylcysteinylarginyllnylglutamyltyrosylalanylcysteinylglycyerylarginylalanylarginylleucylphenylalrolylvalylglutamylisoleucylisoleucylarisoleucylleucylglutamylalanylprolylglyanylleucylalanylglutamylleucylasparagialylglutaminyltryptophylleucylarginylavalylvalylglutaminylglycylaspartyllysyylserylglutamylglycyllysylisoleucylhisylcysteinylaspartylisoleucyllysylprolytamyltyrosylarginylphenylalanylisoleuclanylarginylalanyllysylleucylglutamyllsoleucyllysylthreonylalanylaspartylglurtylvalylglycyllysylprolylleucylthreonspartylalanyltyrosylprolyllysylalanylgylalanyllysylglutamylasparaginylglutameonylisoleucylaspartylthreonylthreonylylphenylalanylarginylisoleucylleucylglllysylglycylarginyltyrosyllysylisoleucysylhistidylglycyllysylalanylglutamylgylleucyllysylvalylisoleucylaspartylvalaraginylleucylglutamylvalylthreonylgluycylglutamylvalylserylleucylalanyltryphreonylaspartylglycylglycylseryllysylivalylglutamylarginylarginylaspartylisotophylvalylleucylalanylthreonylaspartylglutamylphenylalanylthreonylvalylthreylglycylvalylglutamyltyrosylleucylphennylasparaginylarginylvalylglycylthreonthreonylaspartylasparaginylprolylvalylsylaspartylvalylprolylglycylprolylprolleucylthreonylaspartylvalylasparaginylleucylthreonyltryptophylglutamylprolylglycylalanylglutamylisoleucylthreonylaamylleucylarginylaspartyllysylthreonylrtylthreonylalanylmethionylthreonylvalylserylalanylthreonylvalylthreonylaspanylglutamyltyrosylserylphenylalanylargaraginylarginylisoleucylglycylvalylglyonylprolylphenylalanylvalyllysylvalylalarginylprolylserylprolylprolylvalylaspartylglutaminylthreonylglutaminylseryptophylglutamylprolylprolylleucyllysyleucylleucylglycyltyrosylisoleucylisolelglutamylglycyllysylaspartylasparaginylasparaginylmethionyllysylleucylvalylpysylvalylthreonylglycylleucylglutamyllucyltyrosylarginylvalylserylalanylglutylserylaspartylprolylserylglutamylisolylalanylaspartylaspartylalanylphenylalionylaspartylleucylserylalanylphenylalylvalylisoleucylvalylprolylasparaginylcylvalylprolylserylthreonylglycyltyrosthreonyltryptophylcysteinylphenylalanyamylthreonylglycylaspartylarginylvalylrylalanyltyrosylalanylglutamylleucylvalarginylserylaspartyllysylglycylisoleuglutamylasparaginylarginylvalyllysylthsoleucylaspartylvalylasparaginylvalylinylprolyllysylglutamylleucyllysylphenynyllysylaspartylserylvalylhistidylleucrolylaspartylaspartylaspartylglycylglyyrosylvalylvalylglutamyllysylarginylglltryptophylthreonyllysylvalylmethionylpartylleucylglutamylphenylalanylthreontaminylglycyllysylglutamyltyrosylleucynylarginylasparaginyllysylcysteinylglytyrosylvalylaspartylglutamylprolylvalyrolylalanylthreonylvalylprolylaspartylllysyltryptophylarginylaspartylarginylucylphenylalanylleucylthreonyltryptophnylaspartylglycylglycylserylarginylisolylglutamylarginylcysteinylprolylarginlvalylalanylcysteinylglycylglutamylpromethionylglutamylvalylthreonylglycylletophyltyrosylalanyltyrosylarginylvalylylglutaminylglycylalanylseryllysylprollglutamylisoleucylglutaminylalanylvalyalanylprolylglutamylisoleucylphenylalaucylalanylglycylleucylthreonylvalyllyslglutamylleucylprolylalanylthreonylvalprolyllysylisoleucylthreonyltryptophyllisoleucylleucyllysylglutaminylaspartyucylglutamylasparaginylvalylprolyllysyleucylvalylaspartylseryllysylarginylserosylisoleucylisoleucylglutamylalanylvarginylalanylthreonylalanylvalylvalylgspartyllysylprolylglycylprolylprolylalucylthreonylaspartylvalylthreonylaspareucylthreonyltryptophylasparaginylprolylglycylseryllysylisoleucylthreonylaspginylarginylalanylthreonylaspartylseryylleucylserylserylthreonylvalyllysylasyllysylalanylthreonyllysylleucylisoleurosylisoleucylphenylalanylarginylvalylionyltyrosylglycylalanylglycylglutamyllylisoleucylthreonylalanyllysyltyrosyllprolylglycylprolylprolylthreonylarginisoleucylthreonyllysylaspartylalanylvacysteinylglutamylprolylaspartylaspartyleucylthreonylglycyltyrosyltryptophylvolylaspartylthreonylaspartyllysyltryptyllysylmethionylprolylvalyllysylaspartyllysylglycylleucylthreonylasparaginylalanylarginylvalylleucylalanylglutamylglycyllysylprolylseryllysylserylthreoneucyllysylaspartylprolylisoleucylasparylglycyllysylprolylthreonylvalyllysylalvalylarginylleucylasparaginyltryptophylaspartylglycylglycylalanyllysylisolecylglutamylmethionylleucyllysylthreonytophylvalylarginylvalylalanylglutamylgtaminylhistidylleucylleucylprolylglycyminylglutamyltyrosylserylphenylalanylaginyllysylalanylglycylglutamylserylgluaspartylprolylvalylleucylcysteinylargiprolylserylprolylprolylarginyltryptophaginylisoleucylthreonyllysylasparaginyryptophylthreonylvalylprolylglutamyllysoleucylthreonylasparaginyltyrosylisoltylvalylarginylarginyllysylglycyltryptlthreonylthreonylvalyllysylaspartylthreonylprolylleucylthreonylglutamylglycylarginylvalylalanylalanylglutamylasparylserylaspartyltyrosylthreonylglutamylleucylalanyllysylaspartylthreonylphenyprolylprolyltyrosylalanylleucylalanylvarginylhistidylvalylaspartylleucyllysylasparaginylaspartylglycylglycylarginyrosylvalylisoleucylglutamyllysyllysylgrginyltryptophylvalyllysylalanylglycylrtylcysteinylasparaginylphenylalanylareucylglutamylglycylthreonylglutamylvalalylarginylalanylglutamylasparaginylglylprolylserylglutamylprolylthreonylglulutamylaspartylprolylthreonylserylprolrtylleucylhistidylvalylthreonylaspartyoleucylalanylisoleucylalanyltryptophylaginylglycylglycylserylprolylisoleucylglutamylmethionylcysteinylprolylvalylglmethionylarginylvalylasparaginylserylleucyllysylphenylalanyllysylvalylglutapartyllysylglutamyltyrosylvalylleucylaginylalanylisoleucylglycylvalylserylglerylglutamylasparaginylvalylvalylalanyyllysylprolylthreonylisoleucylaspartyltylisoleucylisoleucylvalylisoleucylgluisoleucylprolylvalylprolylphenylalanylthreonylvalylseryltryptophylhistidyllylysylalanylserylaspartylarginylleucyltartylhistidylisoleucylserylalanylhistirylvalylarginylalanylaspartylalanylglylthreonylleucylglutamylasparaginyllysynylserylisoleucylasparaginylvalyllysylcylprolylcysteinyllysylaspartylisoleucthreonyllysylserylserylcysteinyllysyllylprolylglutamylphenylalanylaspartylglucylhistidyltyrosylvalylleucylglutamylrginylarginylthreonyltyrosylisoleucylpmylasparaginyllysylleucylseryltryptophsoleucylprolylasparaginylglycylglutamyinylvalyllysylalanylvalylasparaginyllyyrosylisoleucylglutamylleucyllysylaspautaminylaspartylprolyllysylglutaminylplaspartylvalylglutamylvalylhistidylasplalanylmethionylthreonylisoleucylthreoltyrosylaspartylglycylglycylseryllysyleucylisoleucylglutamyllysylisoleucylalnyltryptophyllysylarginylcysteinylasparolylisoleucylleucylthreonyltyrosylthrlglutamylglycyllysylglutamyltyrosylglunylalanylglutamylasparaginylalanylalanlserylarginylalanylthreonylprolylprolyolylisoleucylaspartylalanylprolyllysylserylleucylglutamylvalyllysylarginylglleucylaspartylalanylserylisoleucylseryonylisoleucylthreonyltryptophylisoleucalylisoleucylvalylprolylglutamylglutamlanylprolylleucylvalylarginylarginylarinylglutamylglutamylglutamylprolylphenonylglutaminylarginylleucylserylisoleuylglycylglutamylserylglutaminylleucylaylarginylprolylaspartylhistidylglycyllvalylglutamylasparaginylaspartylhistidrolylcysteinylthreonylvalylserylvalyllolylprolylisoleucylasparaginylphenylalylisoleucylarginyllysylthreonylserylvautamylprolylprolylleucylaspartylaspartlisoleucylasparaginyltyrosylthreonyllethreonyllysylprolylaspartylserylglutamonylserylthreonylleucylarginylhistidylonyllysylleucylisoleucylglutamylglycylnylarginylvalylarginylalanylglutamylasrolylglycylprolylprolylcysteinylvalylsylaspartylprolylphenylalanylglycylprolllysylprolylisoleucylvalylglutam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threonylisoleucylprolytidylglutamyltyrosylvalylphenylalanylaminylasparaginyllysyltyrosylglycylisolrtylserylglutamylprolylglutamylthreonyylalanylserylvalylprolylglycylalanylprlserylserylvalylthreonylarginylasparagraginyltryptophylglutamylglutamylprolylserylprolylvalylthreonylglycyltyrosylsylaspartylthreonylthreonylseryllysylaparaginylarginylaspartylprolylisoleucyglycylvalylseryltyrosyllysylvalylthreocylserylaspartyltyrosylglutaminylphenyleucylasparaginylalanylalanylglycylvalylserylaspartylprolylalanylthreonylalaanylprolylprolylglycylprolylprolylphenartyltryptophylthreonyllysylserylserylhylserylprolylprolylleucyllysylaspartylglycyltyrosylisoleucylvalylglutamyltyylglutamylglutamyltryptophylglutamyllyvalylarginylglycylthreonyllysylleucylvlutamylglycylalanylphenylalanyltyrosyllanylvalylasparaginylisoleucylalanylglycylglutamylvalylthreonylaspartylvalylrtylarginylleucylvalylserylprolylasparanylserylvalylarginylaspartylarginylisylglycylvalylisoleucylarginylisoleucylcyllysylprolylprolylprolylthreonylvalyonylasparaginylglutamylarginylthreonyllthreonylisoleucylglutamylthreonylthreethionylvalylisoleucyllysylasparaginylidylglutaminylglycylvalyltyrosylseryllutamylalanylglycylglutamylarginyllysyllaspartylvalylleucylaspartylvalylprolylylphenylalanylleucylalanylhistidylasputamylserylcysteinyllysylleucylthreonylutamylaspartylaspartylglycylglycylserltyrosylvalylisoleucylglutamyllysylarginylalanyltryptophylthreonylprolylvalyylarginylglutaminylasparaginylalanyltholeucylglutaminylglycyllysylalanyltyrosoleucylalanylalanylglutamylasparaginylprolylphenylalanylvalylglutamylthreonleucylarginylglutamylprolylisoleucylthlylglutamylaspartylleucylglutamylvalylraginylthreonylvalylthreonylleucylthreyllysyltyrosylaspartylglycylglycylserynyltyrosylvalylleucylglutamylserylargitamyllysylphenylalanylhistidyllysylvalginylleucylleucylserylarginyllysyltyrosylglutamylglycylaspartylthreonyltyroslanylvalylasparaginylisoleucylvalylglyphenylalanylcysteinylthreonyllysylprolpartylglutamylleucylalanylprolylprolyllphenylalanylarginylaspartyllysylleucylglutamylalanylphenylalanylalanylleucylycyllysylprolyllysylprolyllysylvalylsrtylglutamylalanylaspartylvalylleucylgnylhistidylisoleucyllysylthreonylthreoleucylglutamyllysylisoleucyllysylalanyyllysyltyrosylcysteinylvalylvalylvalylcylserylarginyllysylglycylphenylalanylvalylvalylaspartylhistidylprolylglycylerylphenylalanylaspartylglutamylvalyltlvalylisoleucylseryltryptophyllysylproylglycylseryllysylisoleucylthreonylasputamyllysyllysylglutamylvalylglycyllysrolylvalylthreonylserylalanylserylalanylvalylseryllysylleucylleucylglutamylghenylalanylarginylisoleucylhistidylalaglycylisoleucylserylaspartylprolylleucysylalanyllysylaspartylarginylphenylallprolylaspartylglutaminylprolylisoleucllysylaspartylserylalanylleucylvalylthlylhistidylaspartylglycylglycyllysylprosylisoleucylleucylglutamyllysylarginylarginyltryptophylalanylarginylvalylthistidylprolyltyrosylthreonyllysylphenyucylleucylglutamylglycylcysteinylglutainylvalylserylalanylglutamylasparaginyycylaspartylprolylserylprolylprolylserllysylaspartylprolylisoleucylalanyllysaginylprolylglutamylalanylisoleucylaspaginylserylvalylaspartylleucylthreonylinylhistidylaspartylglycylglycylseryllleucylvalylglutamyltyrosylglutaminyllymyltryptophylarginylarginylalanylasparlserylcysteinylprolylglutamylthreonyllleucylarginylaspartylglycylglutaminyltnylvalylleucylalanylvalylasparaginylalylprolylalanylhistidylvalylprolylglutatylarginylleucylglutamylprolylprolylglalanylasparaginylmethionylalanylarginyllysylvalylglycylaspartylthreonylleucysoleucyllysylglycylvalylprolylphenylalhyllysyllysylglutamylaspartylarginylasylarginylisoleucylaspartylvalylthreonylutamylisoleucylarginylasparaginylalancylglycylisoleucyltyrosylserylleucylthlalanylglycylseryllysylthreonylvalylseaspartyllysylprolylglycylprolylprolylarylglutamylisoleucylarginyllysylaspartyltryptophyllysylglutamylprolylleucylaylisoleucylthreonylasparaginyltyrosylvrtylvalylalanylserylalanylglutaminyltrlthreonylseryllysyllysyllysylserylhistleucylasparaginylglutamylglycylasparaganylarginylvalylalanylalanylglutamylasinylglycylprolylphenylalanylvalylglutayllysylalanylleucylaspartylprolylleucyolyllysylaspartylleucylhistidylhistidyeonylglutamylvalylserylleucylvalyltryplarginylaspartylglycylglycylserylprolyylvalylglutamyltyrosylglutaminylglutamspartyltryptophylisoleucyllysylphenylaraginylleucylglutamylcysteinylvalylvaltaminylglycyllysylthreonyltyrosylarginylglutamylasparaginylisoleucylvalylglythreonylthreonylisoleucylprolylisoleucyllysylleucylvalylprolylprolylserylvaleucylisoleucylglutamylglycylleucylvalyonylvalylarginylphenylalanylprolylalanlylprolylvalylprolylthreonylalanyllysyglycylserylglutamylisoleucyllysylthreohreonylvalylglutamylthreonylaspartylaslleucylthreonylisoleucyllysylasparaginrtylthreonylglycylglutamyltyrosylglutaaraginylalanylalanylglycylseryllysylthlthreonylvalylleucylaspartylvalylprolyolylisoleucylasparaginylisoleucylleucylhistidylmethionylthreonylisoleucylserysylaspartylaspartylglycylglycylserylpylisoleucylvalylglutamyllysylglutaminy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Đốt cháy 9,2 gam trong bình chứa 1,12 lít O2 ở điều kiện tiêu chuẩn thu được chất rắn A A/hỏi sau phản ứng chất nào còn dư ?Dư bao nhiêu gam? B/tính phần trăm mỗi chất trong A
Đốt cháy 9,2 gam Na trong bình chứa 1,12 lít O2 ở điều kiện tiêu chuẩn thu được chất rắn A. a,hỏi sau phản ứng chất nào còn dư ?Dư bảo nhiêu gam b, tính phần trăm mỗi chất có trong A
a) \(n_{Na}=\dfrac{9,2}{23}=0,4\left(mol\right);n_{O_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
PTHH: 4Na + O2 --to--> 2Na2O
Xét tỉ lệ: \(\dfrac{0,4}{4}>\dfrac{0,05}{1}\) => Na dư, O2 hết
PTHH: 4Na + O2 --to--> 2Na2O
0,2<-0,05------>0,1
=> \(m_{Na\left(dư\right)}=\left(0,4-0,2\right).23=4,6\left(g\right)\)
b) \(\left\{{}\begin{matrix}\%m_{Na\left(dư\right)}=\dfrac{4,6}{9,2+0,05.32}.100\%=42,6\%\\\%m_{Na_2O}=\dfrac{0,1.62}{9,2+0,05.32}.100\%=57,4\%\end{matrix}\right.\)
Đốt cháy 9,2 Na trong bình chứa 1,12 lít O2 ở điều kiện tiêu chuẩn thu được chất rắn A a,Hỏi sau phản ứng chất nào dư? Dư bao nhiêu gam b, Tính phần trăm mỗi chất có trong A?
a: \(n_{Na}=\dfrac{9.2}{23}=0.4\left(mol\right)\)
\(n_{O_2}=\dfrac{1.12}{22.4}=0.05\left(mol\right)\)
=>Na dư 0,35 mol
b: \(4Na+O_2\rightarrow2Na_2O\)
a: nNa=9.223=0.4(mol)nNa=9.223=0.4(mol)
nO2=1.1222.4=0.05(mol)nO2=1.1222.4=0.05(mol)
=>Na dư 0,35 mol
b: 4Na+O2→2Na2O4Na+O2→2Na2O
Trộn 21,6 gam bột Al với m gam hỗn hợp X gồm FeO , Fe 2 O 3 và Fe 3 O 4 được hỗn hợp Y. Nung Y ở nhiệt độ cao trong điều kiện không có không khí đến phản ứng hoàn toàn thu được chất rắn Z. Cho Z tác dụng vớii dung dịch NaOH dư thu được 6,72 lít khí. Nếu cho Z tác dụng với HNO 3 , loãng dư thì thu được 19,04 lít khí NO là sản phẩm khử duy nhất. Biết thể tích các khí đo ở điều kiện tiêu chuẩn. Giá trị của m là
A. 50,8
B. 46,0
C. 58,6
D. 62,0
Đốt cháy hoàn toàn m gam hỗn hợp X gồm 2 este đồng phân cần dùng 27,44 lít khí O2, thu được 23,52 lít khí CO2 và 18,9 gam H2O. Nếu cho m gam X tác dụng hết với 400 ml dung dịch NaOH 1M, cô cạn dung dịch sau phản ứng thì thu được 27,9 gam chất rắn khan, trong đó có a mol muối Y và b mol Z (MY < MZ). Các thể tích khí đo ở điều kiện tiêu chuẩn. Tỉ lệ a : b là
A. 2:3
B. 4:3
C. 3:2
D. 3:5
Từ đây dễ dàng tìm được công thức của 2 este là: HCOOC2H5 (Y) và CH3COOCH3 (Z)
Lại có: nNaOH dư = 0,4 - 0,35 = 0,05(mol)
khối lượng muối và este bằng nhau (ta thấy ion Na+ thay thế gốc C2H5 làm giảm khối lượng đi 6a gam, ion Na+ thay thế gốc CH3 làm tăng khối lượng 8b gam)
Mà khối lượng muối và este bằng nhau nên ta có:
6a=8b => a:b=4:3
Đốt cháy hoàn toàn m gam hỗn hợp X gồm hai este đồng phân cần dùng 27,44lít khí O2, thu được 23,52 lít khí CO2 và 18,9 gam H2O. Nếu cho m gam X tác dụng hết với 400 ml dung dịch NaOH 1M, cô cạn dung dịch sau phản ứng thì thu được 27,9 gam chất rắn khan, trong đó có a mol muối Y và b mol muối Z (My < Mz). Các thể tích khí đều đo ở điều kiện tiêu chuẩn. Tỉ lệ a : b là
A. 2 : 3
B. 4 : 3
C. 3 : 2
D. 3 : 5
Đáp án: B
BTKL => m X = 25,9 g
BT oxi
=> n O (trong X) = 1,05.2 + 1,05 – 1,225.2 = 0,7 mol
=> n X = 0,35 mol
=> M X = 74
=> gồm CH3COOCH3 và HCOOC2H5
Muối Y là HCOONa (a mol); muối Z là CH3COONa (b mol)
=> a + b = nX =0,35
Mặt khác, chất rắn = m y + m z + m NaOH dư
=> 68a + 82b + (0,4 – 0,35).40 = 27,9
=> a = 0,2; b = 0,15
=> a b = 4 3
Đốt cháy hoàn toàn m gam hỗn hợp X gồm hai este đồng phân cần dùng 23,52 lít khí O2, thu được 20,16 lít khí CO2 và 16,2 gam H2O. Nếu cho m gam X tác dụng hết với 100 ml dung dịch NaOH 4M, cô cạn dung dịch sau phản ứng thì thu được 27,2 gam chất rắn khan, trong đó có a mol muối Y và b mol muối Z (MY < MZ). Các thể tích khí đều đo ở điều kiện tiêu chuẩn. Tỉ lệ a : b là
A. 1 : 3.
B. 2 : 3.
C. 1 : 2.
D. 3 : 4
nCO2 = n H2O = 0,9 mol => este no, đơn chức, mạch hở
=> X no, đơn chức, mạch hở
Bảo toàn O => Ta có 2.nX + 2. n oxi cháy= 2.nCO2 + nH2O
=> nX = 2.0,9+ 0,9- 2. 1,05 = 0,3 mol
Bảo toàn khối lượng => mX = mCO2 + mH2O - m oxi cháy = 22,2
=> MX = 74 => C3H6O2
=> HCOOC2H5 (a mol) và CH3COOCH3 (b mol)
nX = a + b = 0,3
mrắn = 68a + 82b + 0,1.40 = 27,2
=> a = 0,1 và b = 0,2
=> a : b = 1 : 2
Đáp án cần chọn là: C