November 2021 0 16 Report
Химия 8 класс. Согласно уравнению 2KNO3=2KNO2+O2 из 1 моль KNO3 образуется O2 количеством вещества. Выберите один из 4 вариантов ответа: 1)1 моль
2)2 моль
3)1,5 моль
4)0,5 моль
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