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常用相对原子质量H1C12N14O16Na23Mg24Al27Si28P31S32K39Cl35.5Ca40Mn55Fe56Cu64Zn65Ag108I127Ba137W184常用相对分子质量O232(NH4)2SO4132Fe(OH)290KCl74.5O348NH3·H2O35Fe(OH)3107KClO3122.5H22NH4NO380FeSO4·7H2O278K2SO4174H2O18NH4HCO379CuO80KHSO4136H2O234(NH4)2CO396Cu2O144KNO3101HF20NH4H2PO4115CuCl2135KClO90.5H2S34NaO39CuSO4160K2CO3138HCl36.5Na2O278Cu(NO3)2188KOH56H2CO362NaCl58.5Cu(OH)298KMnO4158HNO247Na2SO4142Cu2(OH)2CO3222K2Cr2O7292HNO363NaHSO4120CuSO4·5H2O250BaCl2208H2SO382Na2SO3126CaO56Ba(OH)2171H2SO498Na3PO4164CaCl2111BaCO3197H3PO498Na2CO3106CaSO4136BaSO4233H2SiO378NaHCO384Ca3(PO4)2310ZnO81HClO52.5NaOH40Ca5(OH)(PO4)3502ZnCl2136CO28NaAlO282Ca(NO3)2164ZnSO4161CO244NaNO385CaCO3100Ag2O232CS276NaClO74.5Ca(HCO3)2162AgCl143.5CH416NaBr103Ca(OH)274AgNO3170C2H226Na2SiO3122CaSO4·2H2O172AgI235C2H428FeO72CaSO4·H2O154Cl271CH3OH32Fe2O3160Ca(ClO)2143I2254C2H5OH46Fe3O4232Al2O3102MnO287CO(NH2)260FeS2120AlCl3133.5SiO260CH3COOH60FeCl2127Al2(SO4)3342SiF4104SO48FeCl3162.5Al(OH)378SiC40SO264FeSO4152MgO40SiHCl3135.5SO380Fe2(SO4)3400MgCl295WO3232N228FeSO4152MgSO4120P2O5142NO30Fe2(SO3)3352MgNO386HgO217NO246FeSO3136MgCO384Br2160NH317FeCO3116Mg(OH)258NH4Cl53.5Fe2(CO3)3292K2O94