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18:10 C101 Ch 5 V 2.mp4 C101 Ch 5 V 2.mp4	C101 Ch 5 V 2.mp4 chemical element molecular chemistry & physics oxygen non metals physics halogens atoms electron carbon group boron electromagnetic force asr complete hydrogen particle physics chlorine phosphorus From Kimberly Arnold 1,435 plays 0
15:46 c101 Ch 3 V 3.2 c101 Ch 3 V 3.2	c101 Ch 3 V 3.2 molecular chemistry & physics non metals strong interaction (physics) decimal fraction (mathematics) proton atoms number theory numbers carbon group boron mathematics metalloids asr complete physics neutron From Kimberly Arnold 1,379 plays 0