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2010-09-16 19:19:49
00:12:47
Urdu
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Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/organic-chemistry/substitution-elimination-reactions/nucleophilicity-basicity-sal/v/nucleophilicity-vs-basicity
Nucleophilicity vs. Basicity . The difference between what it means to be a nucleophile and a base
More free lessons at: http://www.khanacademy.org/video?v=Mx7KM-k2MMo