Предмет: Химия, автор: kamillakrivic1

3. Розв'язати задачі на знаходження масової частки Оксигену у сполуках H2O2, KMnO4. помогите пж даю 40 баловв​

Ответы

Автор ответа: kanaldljastrimov
2

H2O2:

Mr (H2O2) = 34

w (O2) = 32 / 34 * 100 = 94 процента.

KMnO4:

Mr (KMnO4) = 158

w (O2) = 64 / 158 * 100 = 41 процент.

Автор ответа: marina8814
1
проверить правильно или нет, сложить % которые получились, всегда должно получиться 100
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