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Everything posted by olmpiad

  1. If your trying to create a bottle rocket for SCHOOL, do you really think that water-sensitive chemicals are the best thing to include?
  2. would a 1:1 ratio even be considered aqua regia
  3. I thought they usually used Radium Bromide or Radium Sulfate...
  4. why not try basifying it yourself
  5. You could make copper sulfate by electrolysis and cu electrodes
  6. I have recently acquired about 1/4 of a pound of Cr2O3 from a rock shop. I have heard that it dissolves in H2SO4 to form a solution that gives Cr upon electrolysis. However, I cannot seem to dissolve it. Are there any chemicals other than H2SO4 and Cr2O3 that are needed? :confused:
  7. Could it be a calcium salt?
  8. The tart taste of mustard is also good example of a way that it makes things tart. I believe that it is a thiocyanate in mustard however.
  9. Try going to meteoriteman.com That is Robert Haag's website, he may be able to help you.
  10. olmpiad

    DCl V.S. HCl

    Would there be any difference as to the etching of lead if I used DCl rather than HCl?
  11. If you are trying to obtain Sb2S3, just go out and purchase the mineral Stibnite (a lot of it comes from Romania).
  12. Thanks... Does the ZnS have to be doped with anything?
  13. Back OT, I measured the radiation from a single Am pellet from a smoke detector with my GC. It's readings averaged out at around 4.5 mR/Hr (5400 CPM). My counter only measures Gamma and Beta however, so it could be higher. In comparison, a standard old Coleman Lantern Mantle will give readings averaging out at around 8.75 mR/Hr (10,500 CPM). Anybody got any Alpha readings?
  14. Does anyone out there know how I could make my own scintillation cocktail? I am planning on making a display of different home-made types of radiation detectors.
  15. I sucessfully extracted Arsenic Christmas Eve, and I recieved Cinnabar on Dolomite and Cuprian Adamite on Christmas.
  16. About freezing the AN. If your goal is to end up with an ice pack, why freeze it? It takes much less of a hassle to freeze water, and it's free.
  17. Order the catalogue from Alfa Aesar. It has a ton of chemicals in it, as well as the most up-to-date version of the periodic table, labware, and pure elements.
  18. "my bad. in that case you should make sure people know it isn't you homework. the way the question was phrased made it seem that way. My apologies. " No problem. Thank-you for the advice.
  19. "If you expect people to do your homework for you, you'd better ask nicer. Or perhaps promise monetary incentive." This is actually a question I saw on another website. I could not solve it, so I decided to give others a challenge to try.
  20. A is made from two steel cables, overlaid with 2ftx6ft redwood lumber. It is 110 feet long, and sags down in the middle 5 feet lower than the ends of it. There are 400 pounds of wood in all.Each cable is rated at 2000lbs How much moreweight can this bridge support? Show or link to your proof, and show the formula used. In what ways does allowing extra sag affect the end result? What about if four cables were used rather than two? :confused:
  21. Try to see how many impurities the Bi needs before it is awful at crystallizing (You could use lead, for example).
  22. It depends on the amount of Mg and the heat it gets up to in the water. If it heats hot enough to ignite the H released when the Mg is reacting with hot water, than yes, there will be a little "Pop".
  23. The cost of producing Krypton or Xenon would far surpass the cost of buying a few flashlight or camera bulbs. The package says what gas they are filled with.
  24. If you look at camping sections for snake bite kits (the ones without the ceesy suction cup), they will generally have some in them to help with the wound.
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