yerevan school 198 - safer internet armenia - safe.am

Download Yerevan School 198 - Safer Internet Armenia - Safe.am

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198 `. 16- : 11- :

:

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, , : 10-16 : , : , , : , , , ,

: 2Zn+O2=2ZnO2Mg+O2=2MgO

: , ,

2KMnO4K2MnO4+MnO2+ O2 2H2O2=2H2O+O22KClO32KCl+ 3O22KNO3=2KNO2+O2

, :2HgO=2Hg+O2

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