CxHyOz+____O2 (点燃)XCO2+____H2O

问题描述:

CxHyOz+____O2 (点燃)XCO2+____H2O

x+y/4-z/2 y/2
CxHyOz+_x+y/4-z/2___O2 (点燃)XCO2+_ y/2_H2O