<span>H2+ S+6 O4-2,
N+ H4+ N+ O3-2,
H2+ O2-,
Co+3 (OH)3-,
Ni+ S-7 O4-2,
S 0,
S+4 O2-2</span>
6P (красн.) + 4H2O (гор.) + 8KMnO4 = 3K2H2P2O6 + 8MnO2 ↓ + 2KOH
CH2-CH2-CH(CH3)-CH(C2H5)=CH(CH3)-CH3
C2H4 + 3O2 = 2CO2 + 2H2O
nC2H4 = 2nCO2
n = V*Vm
VC2H4 = 2VCO2 = 8.4*2 = 16.8л
Сa(OH)2 + CO2 = CaCO3 + H2O
nCaCO3 = nCO2 = VCO2/Vm = 16.8/22.4 = 0.75моль
mCaCO3 = M*n = 100*0.75 = 75г