Question

пожалуйста хелп!!!!!!!!!!!!!

Answer 1

1)2Ca+O2=2CaO
2)CaO+H2O=Ca(OH)2
3)Ca(OH)2+2HCl=CaCl2+2H2O
4)Ca+2H2O=Ca(OH)2+H2
5)Ca+2HCl=CaCl2+H2
6)CaO+2HCl=CaCl2+H2O
7)CaO+H2SO4=CaSO4+H2O
8)CaO+SO3=CaSO4
9)Ca(OH)2+H2SO4=CaSO4+2H2O