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Оч нужна помощь!
Вычислите массу и объем углекислого газа, образовавшегося при взаимодействии 250г карбоната кальция,содержащего 10% примесей с соляной кислотой.
Ответы 1
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СаCO3 + 2HCl = CaCl2 + CO2 + H2OМассовая доля карбоната кальция 100-10=90%Масса карбоната кальция СаСО3 равна 250*90/100=225гМолярная доля карбоната кальция СаСО3 равна 40+12+3*16=100г/мольКоличество вещества карбоната кальция равно 225/100=2,25мольКоличество вещества углекислого газа СО2 равно тоже 2,25мольМолярная масса СО2 равна 12+2*16=44г/мольМасса СО2 равна 2,25*44=99гОбъем СО2 равен 2,25*22,4=50,4л
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Автор:
leonor46 - 6 лет назад
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