Ответы и объяснения

2012-12-17T07:12:42+04:00

2Ca + O2 = 2CaO

H2SO4+ CaO = CaSO4↓ + H2O

CaSO4+2MgOH=Ca(OH)2+(Mg)2sо4

2012-12-17T12:39:09+04:00

2Ca + O2 = 2CaO

 CaO +H2SO4+  = CaSO4↓ + H2O

CaSO4+2КOH=Ca(OH)2+К2SO4