Э(HCOOH)=46:1=46г/э; FeCl3=162,5:3=54,2; H2SO4=98:2=49; MgSO4=120:4=30;
Pb(NO3)2=331:2=165,5;Ni(NO3)2=183:2=91,5;
CdO=128:4=32; GeO2=105:4=26,25;Fe2O3=160:12=13,3.
Э(HCOOH)=46:1=46г/э; FeCl3=162,5:3=54,2; H2SO4=98:2=49; MgSO4=120:4=30;
Pb(NO3)2=331:2=165,5;Ni(NO3)2=183:2=91,5;
CdO=128:4=32; GeO2=105:4=26,25;Fe2O3=160:12=13,3.