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Amelia57
@Amelia57
July 2022
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Алюминий оксиді табиғаттағы боксит құрамында 25% мөлшерінде кездеседі. 1 т бокситтегі алюминийдің және оттектің массалық үлесін (%) есептеп шығарыңдар.
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kpsa
Боксид-Al2O3*?H2O
Mr(Al2O3)=27*2+16*3=102
Mr(H2O)=1*2+16=18
Mr(?H2O)=102*75/25=306
Mr(Al2O3*17H2O)=27*2+16*3+17*2*1+17*16=408
Mr(Al)=27
Mr(O)=16
Al=27*100/408=6
O=16*100/408=4думаю так
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Answers & Comments
Mr(Al2O3)=27*2+16*3=102
Mr(H2O)=1*2+16=18
Mr(?H2O)=102*75/25=306
Mr(Al2O3*17H2O)=27*2+16*3+17*2*1+17*16=408
Mr(Al)=27
Mr(O)=16
Al=27*100/408=6
O=16*100/408=4думаю так