Question

помогите пожалуйста химия срочно

Answer 1

Mg+H2SO4=MgSO4+H2 MgSO4+2NaOH=Mg(OH)2+ Na2SO4 Mg(OH)2+2HCl=MgCl2+2H2O

Answer 2

CaO+2HCl=CaCl2+H2O

Answer 3

CaCl2+H2CO3=CaCO3+2HCl

Answer 4

CaCO3+2HCl=CaCl2+H2O+CO2

Answer 5

Zn + 2HCl → ZnCl2 + H2

ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl

Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O

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CuSO4 + 2NaOH → Cu(OH)2↓ + Na2SO4

Cu(OH)2 + 4(NH3•H2O) → [Cu(NH3)4](OH)2 + 4H2O

[Cu(NH3)4](OH)2 + 6HCl = 4NH4Cl + CuCl2 + 2H2O