Предмет: Химия, автор: katyakosenko2009

Під час реакції взаємодії галію масою 840 г, витратився кисень масою 288 г. З'ясуй масу галій оксиду, що утворився.
Очень срочно. Дам 40 баллов​

Ответы

Автор ответа: Abduuz
1

Ответ:

Сначала пишем реакцию:

4Ga + 3O2 = 2Ga2O3

По закону сохранения массы:

m(Ga) + m(O2) = m(Ga2O3)

m(Ga) = 840

m(O2) = 288

m(Ga2O3) = 840 + 288 = 1128 гр

Ответ: 1128 гр

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