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Ilja

Senior Members
  • Content Count

    43
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About Ilja

  • Rank
    Quark

Profile Information

  • Location
    Germany / Stuttgart
  • College Major/Degree
    Institut Dr.Flad
  • Favorite Area of Science
    Chemistry/Physics
  • Biography
    Im 17 :D
  • Occupation
    Student
  1. Ilja

    mints

    its the same with those "orbit" chewing gums , they contain sorbit and xylol which dont evaporate but they are moving and therefore they need energy which they "steal" from the warmth of your mouth then it feels cold.
  2. just a clue there would be "peroxo" in the name if there are any O-O bondings.
  3. Ilja

    About Na and O2

    Uve got to calculate , products - edukts = energy that is needed to form this compound 02(gas) has no energy and Na(solid) too , if the energy of Na2O is negative then its exotherm.
  4. Just figure out the charge , like this: K can only be in +1 so K3P there must the P be in -3 and so on. Other examples are Oxygen , in compounds its in the majority of cases -2 charged.Or the earth-alkali metals ar always +2...
  5. Agree , it occures when uve got ammonia and hcl standing next to each other.
  6. Ilja

    Catalyst

    Not actually,maybe i didnt make myself clear , but im looking for any kind of experiments or synthesis where you use electricity as an catalyst except as an provider for energy (sorry if im not clear with my questions) I mean like any other catalyst e.g platinum or whatever.
  7. Ilja

    Catalyst

    Yes , sure but are there any other applications for electricity as taking/giving electrons and the energy it's providing. Arent there any other reaction that can happen in order to speed up a reaction ??
  8. Ilja

    Catalyst

    Ive been wondering if there has been experiments with electricity as a catalyst , i especially think of the enegry its providing ? Maybe there are other catalytic properties except providing energy?
  9. Copper(II)Chloride gives a really good green/blue flame if i remember well
  10. sounds to me like yall got what you were after im happy for you!
  11. Ilja

    Merry Christmas

    Didn't know where to post this at , anyway i wish yall a merry christmas!
  12. It depends on how much light the ions absorb , and if the rest light (the light the ions havent absorbed) is between 400nm and 800nm we can see a color. At least that what i think.
  13. It always a sudden drop or rise if you use a strong base or acid , you see the 4th curve appears not to have a sudden drop or rise because there is a weak acid/base act. Addionally it has to do with the equivalence of acid and base , and when you add one more drop of strong base/acid it will result in a sudden rise/fall of your pH level. Hope i could help
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