Question

常用物质的相对分子质量除了Fe H2O H2SO4 Zn Cu CuO CO2 CO 外的.麻烦,还有多一点的么?

Answer 1

BA:137,CL:35.5,N:14,Ag:108,AL:27,S:32,k:39,CA:40,NA:23,MG:24

NaCL:58.5 --------BACO3:197 -----------AgCL:143.5

BASO4:233--------- AGNO3:169---------- BANO3:199

CACO3:100 --------NA2CO3:106 ----------NAHCO3:84

题做多了自然就会了,不必刻意去背