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                    Al2O3               ¡«      2Al
                                  1                               2
                                 n(Al2O3)                   n(Al)
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                   n(Al2O3)/n(Al)=1/2,
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                   n(Al2O3)=n(Al)/2
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                 n(SiO2)/[n(Al)/2]=10
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              n(Si)/n(Al)=5,
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               Si/Al=5

[ Last edited by penfee on 2008-12-3 at 03:33 ]
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