一,1,11/44=0.24mol,,,2,56/28=2mol,,,3,249.6/137+35.5*2=1.2mol二,1,Ar=40g/mol,Al=27g/mol,Br2=80*2=160g/mol 2,KOH=39+16+1=56g/mol
Ca(OH)2=40+(16+1)*2=74g/mol
NH3NO3=14+1*3+14+16*3=79g/mol
FeCl3=56+35.5*3=162.5g/mol
CuSO4.5H2O=64+32+16*4+5(1*2+16)=250g/mol...
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