Предмет: Химия, автор: Haissse

Очень срочно решите одну задачу очень важно !!!!!!!!
Определите массу оксида кальция и полученного при горении 20 г кальция

Ответы

Автор ответа: triton30501346

1

Ответ:

56 грамм

Объяснение:

2Ca + O2 = 2CaO
20×112=40×X
X = 56 грамм

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