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Sergey619365

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    Gold in aqua regia
    0:09

    Gold in aqua regia

    Dissolving gold in aqua regia
    13 views
    Iron and sulfuric acid
    0:07

    Iron and sulfuric acid

    Dissolution of an iron bearing in sulfuric acid
    14 views
    Radio parts of the USSR review in Russian
    9:32

    Radio parts of the USSR review in Russian

    Old radio components, transistors, microcircuits, etc. full version with American subtitles on YouTube
    1 view