Предмет: Химия, автор: nastyaaa1100q

5. Обчисліть відносну молекулярну масу манган (VII) оксиду.​

Ответы

Автор ответа: urysik1910
2

Ответ:Mr(Mn2O7)=55*2+16*7=222

Объяснение

:)

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