October 2018 1 40 Report
Jika 204gr cuplikan bauksit (Al2O3; mr: 102) direduksi sempurna, dihasilkan logam Al (Ar: 27) seberat 54gr. persentase Al2O3 dlm cuplikan tsb adlh
a. 26
b. 40
c. 50
d. 60
e. 70
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