Объяснение:
1) Ar(C) = 12
Ar(H)=1
Ar(N) = 14
Ar(O) = 16
Ar(Ag)=108
Ar(H) = 1
Ar(Ni) = 59
2) Si(IV)H(I), Cr(VI)O(II), H(I)S(II), C(IV)O(II), C(II)O(II), S(VI)O(II), S(IV)O(II), Fe(III)O(II), Fe(II)O(II), H(I)Cl(I), H(I)Br(I), Cl(V)O(II), Cl(VII)O(II), P(III)H(I), K(I)O(II), Al(III)O(II), P(V)O(II), N(IV)O(II), N(V)O(II), Cr(III)O(II), Si(IV)O(II), B(III)O(II), Si(IV)H(I), Mn(VII)O(II), Mn(II)O(II), Cu(II)O(II), N(III)O(II)
A) CaCl2, H2O, PH3, Ag2O, Fe2O3, N2O5, CaO, CrO3
Б) HCl, PH3, Cl2O7, FeO(Fe2O3)
CO2, NO2, BaO, Al2S3
Zn + O2 = ZnO
Объяснение:
CO + O2 = CO2
Fe+O2=FeO