1.3
Ибо 38 електронов,номер группы вроде,Sr-стронций
MgO + H2O = Mg(OH)2 реакция обмена
CaO + HNO3 = Ca(NO3)2 + H2O реакция ионного обмена
C2H4-> C4H8O2->C2H5OH->C2H4->C2H2->C2H5OH->CH3COOH-> C3H6O2
CH2=CH2+H2O = CH3CH2OH
CH3CH2OH + CH3COOH = CH3COOCH2CH3+H2O
CH3COOCH2CH3+H2O = CH3CH2OH + CH3COOH
C2H5OH = C2H4+H2O
C2H4 = C2H2+H2
C2H2+H2 = C2H4
C2H4+H2O = C2H5OH
C2H5OH + O2 = CH3COOH + H2O
CH3COOH+CH3OH = CH3COOCH3+H2O