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b) 2NO → N₂+O₂
c) 2PbO + C → 2Pb + CO₂
d) 2Al + Cr₂O₃ → Al₂O₃ + 2Cr
2NO -> N₂+O₂
2PbO + C -> 2Pb + CO2
2Al + Cr2O3 -> AL2O3 + 2Cr
b) czy reakcja nie miała wyglądać tak:
NO=N²+O² ?
jeśli tak to wpsolczynniki to:
2 NO=N²+O²
c) 2PbO+C=2Pb+CO²
d) 2Al+Cr²O³=Al²O³+ 2Cr