Предмет: Химия, автор: minecraftxxxxxxxxxxx

Кальцій кількістю речовини 0,5 моль повністю спалили. Яка маса утвореного оксиду.

Ответы

Автор ответа: shevchuk2k8

1

Відповідь: 28г

Пояснення: реакція 2Ca + O2 = 2CaO, тоді кількість речовини кальцію і кальцій оксид однакова. m=M*n=56*0.5=28г

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