December 2018 1 111 Report
Suatu zat organik tersusun dari 40% karbon, 6.6% hidrogen, dan sisanya oksigen. (Ar C = 12; H =1; O = 16) Jika 15 gr zat itu dilarutkan dalam 25 gr air (Kf = 1.86), maka larutan membeku pada suhu -6.2 C. Rumus molekul zat tsb??

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