Закончить  уравнения, дописать коэффициенты . (1) C2H2 + O2= CO2 + H2O ,  (2) H2S + O2= SO2 + H2O ,  (3) C3H8 + O2 = CO2 + H2O, (4) CuH10 +O2 = CO2 + H2O, (5) FeS +O2 = Fe2O3+ SO2 
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