十种常用的推导化学式的方法

(42,300200),.,,,.1.1X2X+5O24CO2+2H2O,X().(A)C2H4(B)CH4(C)C2H2(D)C6H6:CO2H2OXCH;10O,5O210O,X.,,XC2H2.(C).2.2ABC+1+4-2,().(A)ABC4(B)A2BC3(C)A3BC2(D)ABC3:,.A2BC3,(B).3.3X1,Y6,XY().(A)XY2(B)X2Y(C)XY(D)X6Y:,X1+1,Y2-2,XYX2Y.(B).4.4,716,().(A)NO(B)NO2(C)N2O(D)N2O5:NxOy,14x16y=716.xy=12.(B).5.52132gM1168gM,M56.().(A)MO(B)M2O3(C)M3O4(D)MO2:MxOy,2123g-1168g=0164g.MO11680164=56x16y.720079xy=34.(C).6.6,3715%,1215%()..:1-3715%-1215%=50%.CxHyOz,3715%1215%50%=12xy16z.xyz=141.CH4O.7.7AB.AB2,A50%,A40%..:Am,Bn.AB2,B1-50%=50%.50%50%=m2n.mn=21.AxBy.A40%,B1-40%=60%.40%60%=2xy,xy=13.AB3.8.8116g,0154g..:FexOy,FexOy+yH2xFe+yH2O56x+16y18y116g0154g(56x+16y)18y=116g0.54g,xy=23.Fe2O3.9.9,119.().(A)CH4(B)C2H2(C)C2H5OH(D)CH3OH:,CxHyOz.z.1xCO2y2H2O,44x18y2=119.xy=14.(A)(D).10.1038%,().(A)NH4HCO3(B)CO(NH2)2(C)NH4Cl(D)(NH4)2SO4:35%,38%.CO(NH2)2.(B).8