January 2019 1 12 Report
Perhatikan zat-zat berikut! (1) karbon dioksida.
(2) hidrogen
(3) air
(4) oksigen.
Zat diatas yang merupakan kelompok molekul ditunjukkan oleh..
A. (1) dan (2)
B. (1) dan (3)
C. (2) dan (3)
D. (2) dan (4)

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