2 K + Cl2 = 2 KCl
2 Na + Br2 = 2 NaBr
2 Cu + O2 = 2 CuO
4 Li + O2 = 2 Li2O
СH3-СH(Cl)-СH2-С[CH3)2]-СH2-С H(C2H5)-СH2-С(O)OH
(C3H7)NH(CH3) (CH3)2NNHC6H5
1,2-C5H4-C(O)(OC6H5)
H2N-CH2-CH(CH3)-CH2-C(CH3)2-CH2-C(O)OH
Ω(Na) = 100%-ωпримесей=100%-17%=83%
m(Na)=m(Na)тех*ω(Na)/*100%=2,3г*83%/10%=1,909г
1,909г хл
4Na + O2=2Na2O
92г 22,4л
х= 1,090*22,4/92=0,47л
<span>K2S + H2SO4 = H2S + K2SO4</span>