<span>MgCl2 - Mg (II)Cl (I)
Al2S3 - Al (III) S (II)
S2O5 - S (II) O (V)
SO3 - S (lll) O (ll)
HoL - ?
Hg2O - Hg (l) O (ll)
NaBr - Na (l) Br (l)
Cr2O3 - Cr (lll) O (ll)
NO2 - N (lV) O (ll)
MnO2 - Mn (l) O (ll)</span>
1) W(C)=Mr(c)/Mr(C2H2)×100\%=24/26×100\%=92.3\%
2) C2H2=2C+2H2
m(H2)=m(C2H2)×M(H2)/M(C2H2)=13×4/26=2
n(h2)=m(H2)/M(H2)=2/4=0.5 моль
3) р(С4H10)= M(C4H10)/V(m)(C4H10)= 58/22.4=2.59 г/л