Mr(C12H22O11)=12*12+1*22+16*11=342 a.o.m.
W(C)=(144/ 342)*100\%=42\%
W(H)=(22/342)*100=6\%
W(O)=(176/342)*100=51
x 0.025
НСООН + Аg2O = HCOOH + 2Ag
30 2моль
х__________0,025
30_________2моль
х=30х0,025/2
х=0,375
Li+O2=Li2O
Li2O+2HCl=2LiCl+H2O
LiCl+NaNO3=LiNO3+NaCL
CH4 + 2O2 = CO2<span>↑ + 2H2O
2C2H2 + 5O2 = 4CO2</span><span>↑ + 2H2O</span>