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  1. en.wikipedia.org › wiki › PlatinumPlatinum - Wikipedia

    Hace 12 horas · Karl von Sickingen researched platinum extensively in 1772. He succeeded in making malleable platinum by alloying it with gold, dissolving the alloy in hot aqua regia , precipitating the platinum with ammonium chloride , igniting the ammonium chloroplatinate, and hammering the resulting finely divided platinum to make it cohere.

  2. 29 de may. de 2024 · Veranstalter von Essbare Wildpflanzen Spaziergang . Exportiere eine .ICS Datei. ... 2024 10:00 - 13:00 Franz-von-Sickingen-Straße 33, Oberderdingen-Flehingen.