lmkonate2003 lmkonate2003 26-06-2021 Chemistry contestada Which equation represents a combustion reaction? 2SO2 + O2 → 2SO3 Pb(NO3)2 + 2HCl → PbCl2 + 2HNO3 2C2H6 + 7O2 → 4CO2 + 6H2O Ca + 2HCl → CaCl2 + H2