search points attachment profile arrow left arrow right star heart verified symbols equation arrow-down question mark check menu accountancyadministrationagriculturalalgebraallarabicartart_musicbelarusbelarus_altbiologybusinesscatalachemistrychineseeconomicsegzamenglishentrepreneurshipenvironmentethicseuskarafirst_aidfrenchgalegogeographygeologygeometrygermangrammarhealthhistoryindia_langindonesian_langinformaticsitalianjapanesekazachkazach_altkoreanlanguagelatinlawlife_scienceliteraturelogicmathematicsmusicnigerian_langother_languagesotherspedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligionrpa_langrussianrussian_altsciencesecurityskillssocial_sciencesociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation accountancyadministrationagriculturalalgebraall_1arabicartart_music_2belarusbelarus_altbiologybusiness_2catalachemistry_1chineseeconomicsexam_3englishentrepreneurshipenvironment_2ethicseuskarasecurity_1frenchgalegogeography_4geology_4geometrygermangrammarhealthhistoryindia-langindonesian-langinformaticsitalianjapanesekazachAsset 230koreanlanguagelatinlawlife-scienceliteraturelogic_2mathematicsmusicnigerian-langotherlanguagesother_1pedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligion_1rpa-langrussianrussian_altsciencesecurity_3_mskills_1allsocial_science_5_msociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation

Ответ

Ответ дан
Listopad9
Na2SO4+Ba(NO3)2--->BaSO4↓+2NaNO3
m(Na2SO4)чист=60*15%=9г
m(Ba(NO3)2)чист=40*10%=4г
nNa2SO4=m/M=9/142=0,06 моль
nBa(NO3)2=m/M=4/261=0.015 моль
по уравнению реакции нужно 0.015 моль Na2SO4, а дали 0,6 моль, следовательно, решаем по Ba(NO3)2
nBaSO4=nBa(NO3)2=0,015моль
mBaSO4= n*M = 0,015*233 = 3,57г
Ответ: 3,57г - масса осадка (BaSO4)

Ответы и объяснения

Не тот ответ, который тебе нужен?


По всем вопросам пишите на - [email protected]