Ответ:
Объяснение:
I2O5, SeO3, P2O3, PbO, B2O3, CaO, Ag2O
NH4Cl+NaOH->NaCl+NH3+H2O
4NH3+3O2->2N2+6H2O
N2+O2->2NO
2NO+O2->2NO2
2NO2+2NaOH-NaNO3+NaNO2+H2O
NaNO2+H2SO4->HNO2+NaHSO4
N=Na*n
N=6*10²³*1=6*10²³ атомов
<span>К</span>₂<span>MnO</span>₄<span> SO</span>₃<span> Na</span>₂<span>SO</span>₄<span> Al</span>₂<span>(CO</span>₃<span>)</span>₃
Валентности:
К 1
Mn 7
O 2
S 6
Na 1
Al 3
C 4