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chenbeier

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About chenbeier

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    Chemistry

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  1. The coppersulfate solution will probably react with the aluminium and cover it with copper (immersion plating). Better is to use a dilutet solution of an acid . Copper is resistant to dilute acids, like hydrochloric, sulfuric or acetic acid. Aluminium will be dissolved.
  2. I never would drink propylenglycol. Better is use citric acid or tatratic acid and water to dissolve the stuff. Or try it alcaline by adding sodium hydrogen carbonate, pottash or lime.
  3. Additionally in the bulb is a little bit iodine in, which reacts at the high temperature of the filament to WI2 . This deposit on the filamnet again and get decompsed again, it enhance the life time of the filament. But some of the vapour will deposit also on the glass it self.
  4. Very effective is 2,4,5-T and derivates, it kills every plant. A member of the colour agents. Chlorates maybe can be banned, because also to use for.......bang.
  5. I dont understand what you had done. For what is the coffee filter. Ether is lighter then potassium hydroxide. You shuild get two phases. Ether on top and KOH solution below.
  6. No, he was born in the city of Münster North rhine weshpalia, but he worked at several Univeristies also in Strassbourg France.
  7. Here a whole sentence for the unbeleavibles.Stimme 1.3gpp
  8. Maybe, but I am a bloody german and I posted the sound file to clarify.
  9. Spell like the colour "grey" and add "where", but swallow the "re" at the end. Gre(y)whe(re).
  10. The topic should be moved to inorganic chemistry.
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