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Class Video 6-18-21 duration 49 minutes 41 seconds Class Video 6-18-21 Class Video 6-18-21	Class Video 6-18-21 guys atoms table questions grams mass mole moles times hat question meters 24th answer lecture lab oxygen conversions o2 23rd From Leena Nabulsi 0 likes 4 plays 0
1.6 Pre-Class Lecture duration 16 minutes 24 seconds 1.6 Pre-Class Lecture 1.6 Pre-Class Lecture	1.6 Pre-Class Lecture 23rd atoms mole moles grams o2 table times homework mass helium calcium calculation conversion tonight nitrogen oxygen calculations week 25th From Leena Nabulsi 0 likes 29 plays 0