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Everything posted by chenbeier

  1. It is section not sextion. You can mould a pin with a epoxyresin. Then grind and polish it. Under the microscope you can find a copper core and a nickel gold layer on top.
  2. In the other forum it was already denied to make compounds for medicine.
  3. What kind of crystals you talking about? Copper is not soluble in water. You need ions, copper sulfate, copper chloride, copper nitrate, etc.
  4. In the pond don't worry, you will not drink large amounts of the water. The pipework is questionable, especially you have lead and copper pipes mixed, so the lead can be dissolved and drinking water should be lead free.
  5. Heat will make it, but also if you dissolve both components in water.
  6. You have to add until solution gets alkaline. Maybe heat up a little bit.
  7. Dissolve the Hydroxide in water , then add some drops of the solution to the Putrecinehydrochloride.
  8. The odor comes from free Aminogroups. In the hydrochloride the amino groups changed to ammonium, what has no odor. You have to add some hydroxide and the odor comes back.
  9. Calcium ions are Ca2+ so they lost 2 electrons
  10. If it says dissolved then it is dissolved. But calcium can make compounds, like lime, CaCO3 or gypsium CaSO4 and others , which soloubility is poor. So there can be not dissolved particles in the water or other liquids. I think also heart attack is caused by this, if not solouble calcium compounds and other compounds block the venes.
  11. It is the same, one contains crystal water., which has no influence for the chemical reaction.
  12. This question was disscussed in an other forum already. The OP did nothing.
  13. Your head line sayas it does emit an odor, your questen says it doesnt, what is the case now. Normaly salts from amin compounds shouldt have an odor only there is some decomposition or inpurity.
  14. I dont think WCl4 is existing in water. It get hydrolysis to HCl and Tungsten oxides.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
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