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Elizaveta276Volkova
@Elizaveta276Volkova
July 2022
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Помогите пожалуйста решить упражнения по химии
№ 43; 44.
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kirden
43
1)Pb(NO3)2+2NaOH-->Pb(OH)2+2NaNO3
2)Pb(OH)2--t*-->PbO+H2O
3)PbO+2HCl-->PbCl2+H2O
4)PbCl2+2AgNO3-->Pb(NO3)2+2AgCl
44
1)CuSO4+2NaOH-->Cu(OH)2+Na2SO4
2)Cu(OH)2+2HNO3-->Cu(NO3)2+H2O
3)CuSO4+Fe-->FeSO4+Cu
4)2Cu+O2--t-->2CuO
5)CuO+2HNO3-->Cu(NO3)2+H2O
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Elizaveta276Volkova
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Answers & Comments
1)Pb(NO3)2+2NaOH-->Pb(OH)2+2NaNO3
2)Pb(OH)2--t*-->PbO+H2O
3)PbO+2HCl-->PbCl2+H2O
4)PbCl2+2AgNO3-->Pb(NO3)2+2AgCl
44
1)CuSO4+2NaOH-->Cu(OH)2+Na2SO4
2)Cu(OH)2+2HNO3-->Cu(NO3)2+H2O
3)CuSO4+Fe-->FeSO4+Cu
4)2Cu+O2--t-->2CuO
5)CuO+2HNO3-->Cu(NO3)2+H2O