FeS + HCl → FeCl+ H2S
Cu2O + 02→ CuO
HNO3 → NO2 + H2O+02
Al2O3+ H,2SO4 → Al2(SO4)3 + H2O
Pb(NO3)2 + KI→ Pbl2 + KNO3
реакция теңдеулерін теңестір. Срочно!!!
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