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chenbeier

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chenbeier last won the day on June 6 2021

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    Chemistry

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  1. Calciumchloride will absorb water until it changes to liquid. So probably not good idea to use it and blow air over it.
  2. Yeah that is the correction of the observers1 question.
  3. No, CuSO4 dissociates to Cu(H2O)4 2+ ( blue colour) and SO4 2- ions, like all salts do if dissolved in water. NaCl => Na+ + Cl- as example. And your equation is wrong. H2O + CuSO4 ---> H2SO4+ Cu? You forget the oxygen from H2O H2O + CuSO4 <--- H2SO4+ CuO is a reaction what can take place.
  4. Put some Gallium to a Piece of Aluminium and watch after one week.
  5. No, but english is not my mother language. I corrected it .
  6. https://www.nobelprize.org/prizes/chemistry/2022/summary/
  7. To get the Anode and cathode activ it needs charging and discharging. No use will get residius on the electrodes. Strong use charging and discharging also minimize the lifetime by dissolving of the electrodes. The longest lifetime is achieved to have small discharging and charging current. For this you can buy small rectifier to do this job, voltage controlled.
  8. This topic I on the border limit to discuss. Not so much hints about how explosives reacting please. This topic should be closed.
  9. You are right,if it is E2. I was thinking it is E1.
  10. The first molecule will be built because after Elimination the Cl. The carbanion is stabilized through the methyl group.
  11. Your photo, I cannot open. 404 file not found on unbuntuu
  12. The attachment is broken. Can not open.
  13. Neutron can be developed by reacting alpha particles with Beryllium 9 Be 4 He + 9 Be -> 13C 13 C => 12 C + n
  14. No for alcohol. But alcohol can be determined by testtube with chromium sulfuric acid. Used in tubes used by police to determine alcohol in breathing air from drunken drivers. Methanol and ethanol can divided by boric acid. First one gives boric methyl ester what burns in green flame. The Ethyl ester is only made up by adding sulfuric acid. Other test Strips are used for pH, Sulfide (lead acetate paper), oxidisers (potassium iodide starchpaper). Glucose in urine for diabetic,
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