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Thanks Sal!
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@Swetlana0 AGREED! 100%
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i can see how much u like to teach!!.....the way how u put all these valuble vedios for free.......and we end up paying to teachers who doesnt really teach us anythin!!.....
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My organic chemistry book said that oxidation or reduction can also be losing/gaining oxygen as well....
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I can speak Arabic .. شكرا لك ..
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thank you ..
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I wish all my teachers were like you.
You sir are a life saver!
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@itsdojoson no, but im farting too much
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@aguarras21 u mad bro?
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OILRIG - Oxidation is loss, reduction is gain :D
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Sir,
I respect you and your videos.
Khanacademy is doing a great job.
No one, I believe, is like you on this earth who puts so much effort for free!
A big salute to KHANACADEMY!!
Keep up the great job.
Best wishes for future
Swetlana
Swetlana0 2 years ago 105
Sir you are really doing a great job and i have learnt so much from your various videos.........keep up the good work..and 1 more thing that YOU ARE THE BEST TEACHER IN THE WORLD
add625 2 years ago 47