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硝酸のみによる金の精製 |硝酸による金の精製 |金精錬所
Eden Crafters - The Hunt for Gold is On! Episode 3
金の採掘: 過酸化水素と塩酸を使用して金石を抽出します。
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ONLY this acid can dissolve GOLD. Selenic acid
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How to recognise Sulphuric acid and Sulphonic acid #business #gold
Gold recovery with sulfuric acid (Urdu/Hindi).
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