Ответ:
4
Объяснение:
w(Zn)=65:81•100%=80%
w(O)=16:81•100%=20%
80%-20%=60%
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Ответ:
4
Объяснение:
w(Zn)=65:81•100%=80%
w(O)=16:81•100%=20%
80%-20%=60%
1)68%
2)20%
3)62%
4)60%
5)66%
6)80%
https://znanija.com/task/34782016?utm_source=android&utm_medium=share&utm_campaign=question
https://znanija.com/task/34782002?utm_source=android&utm_medium=share&utm_campaign=question
НgО
CО2
CuO
CаО
H2O2