Предмет: Химия, автор: angelinafom9

Укажіть масу (Г) кальцій оксиду потрібного для добування кальцій карбонату масою 200г

Ответы

Автор ответа: petr144

1

Відповідь:

200г.

Пояснення:

Молярна маса кальцій оксиду (CaO) дорівнює 56.08 г/моль, а молярна маса кальцій карбонату (CaCO3) - 100.09 г/моль.

Для знаходження маси кальцій оксиду, який потрібно для добування 200 г кальцій карбонату, спочатку визначимо кількість молей кальцій карбонату за формулою:

Моли = Маса / Молярна маса

Моли (CaCO3) = 200 г / 100.09 г/моль = 1.999 моль (округлюємо до 2 моль)

Так як коефіцієнт стехіометрії між кальцій оксидом і кальцій карбонатом дорівнює 1:1, маса кальцій оксиду буде такою ж як і маса кальцій карбонату.

Тому, маса кальцій оксиду, необхідного для добування 200 г кальцій карбонату, дорівнює 200 г.

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