September 2018 1 316 Report
Pada pembakaran 12 gram suatu senyawa karbon dihasilkan 22 gram gas CO2 (A,C = 12, O 16). unsur karbon dalam senyawa tersebut adalah....

A. 23 persen
B. 27 persen
C. 50 persen
D. 55 persen
E. 77 persen
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