Предмет: Химия, автор: bozhena09pvlcom

SO , FeO, Fe 0,, Al,O..
2. Найдите отношения массовых долей элементов в данных соединениях: FeO,
Fe,0; РО, РО; PCl, PCl.

Ответы

Автор ответа: emilija201018

1

Дано:

FeO

Найти: w(Fe), w(0)

Решение:

W(э) = Аг(э) - n(э)\Mr(в-ва)

Mr(FeO) = 56 + 16 = 72

W(Fe) = 56 - 1\72 = 0,78 или 78%

W(O) = 16 - 1\72 = 0,22 или 22%

проверка решения:

w(Fe) + w(0) = 78% + 22% = 100%

Ответ: W(Fe) = 78%

W(O) = 22%

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