Mr(AI₂O₃)=27x2+16x3=54+48=102
ω(AI)=54÷102=1.9 ω%(AI)=ω(AI)×100%=1.9×100%=19%
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Mr(AI₂O₃)=27x2+16x3=54+48=102
ω(AI)=54÷102=1.9 ω%(AI)=ω(AI)×100%=1.9×100%=19%