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sh1zanytaaa
@sh1zanytaaa
August 2022
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химия,7 класс, реакции
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marishka5271
Verified answer
1)2Sn+O2=2SnO
2)4K+O2=2K2O
3)2Be+O2=2BeO
4)Si+O2=SiO2
5)4Fe+3O2=2Fe2O3
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Answers & Comments
Verified answer
1)2Sn+O2=2SnO
2)4K+O2=2K2O
3)2Be+O2=2BeO
4)Si+O2=SiO2
5)4Fe+3O2=2Fe2O3