7- где
8- гд
9-
а-2
б-5
в-4
г-1
Mn+2HCl=MnCl2+H2
MnCl2+2AgNO3=Mn(NO3)2+2AgCl
Mn(NO3)2=MnO2+2NO2
3MnO2+KClO3+6KOH=3K2MnO4+KCl+3H2O
3K2MnO4+2H2O=2KMnO4+MnO2+4KOH
MnO2+Si=Mn+SiO2
C2H6>C2H5Cl>C2H5OH>CH3-COOH-->Cl-CH2-COOH>NH2-CH2-COOH
C2H6+Ci2 = HCl+C2H5Ci
C2H5Ci + KOH = C2H5OH
C2H5OH + K2CrO7 + H2SO4 = CH3COOH + Cr2(SO4)3 + K2SO4 + H2O
CH3COOH + Cl2 = ClCH2COOH + HCl
<span>CiCH2COOH + 2NH3 = NH2CH2COOH + NH4Ci</span>
<span>м(CaCO3)=40+12+16*3=100</span>