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kciray

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    Computer science, Chemistry

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  1. I'd like to find some base course about general chemistry. At first I've seen some lectures in Khan academy, but I think they're very low quality and short. Where can I find hi-quality online lectures? I'd like one standard course, long (1-2 term) and detailed. What do you think about MIT courses?
  2. Why mass number denominates "A" and atomic number - "Z" ? I couldn't find it anywhere. Maybe "A" derivated from some Latin word starts which "A"?
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