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Розклади кальцій карбонат кількістю речовини 0,4 моль.Яка кількістю кальцій оксиду утворилася?
Ответы 1
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СаСО3 = СаО + СО2 1 1 Из одно го моля карбоната кальция согласно уравнению получается 1 моль оксида кальция, значит, из 0,4 моль карбоната получится 0.4 моль оксида кальция....
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Автор:
sonialam - 5 лет назад
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В данном отрывке из статьи ВВС допущены различные ошибки в пунктуации и/ или грамматике. Лишь один из 3-х вариантов является правильным. Найдите этот вариант.
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1. Mr Sobyanin become mayor in 2010 after Yuri Luzhkov, who had governed the city for almost two decades, was forced out of office. The Kremlin-backed candidate has kept a low profile during the race, shunning debates with the five other candidates.
(From BBC, 9 September 2013)
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(From BBC, 9 September 2013)
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