Здійснити перетворення:
...................... t°
a) Si → SiO₂ → Na₂SiO3 → H₂SiO3 SiO₂;
b) P→ P₂O5 → H3PO4 → Na3PO4 → Ag3PO4;
c) NH4NO3→ NH4Cl → NH3→ NO→ NO₂→ HNO3 → NaNO3 ;
d) NH3 →N2 → NO→ KNO3 → 02 .​
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