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hypervalent_iodine

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Everything posted by hypervalent_iodine

  1. Methinks you don't know what pH is. Your math is way, way off. FYI: pH = -log[H+] [H+] = 10-pH Knowing the above, I get a difference of about 5.53 x 1015 atoms / L of H+ between pH values of 7.35 and 7.45.
  2. ! Moderator Note I have already removed this thread once, as you already have one on more or less the same topic. Please stick to that thread, and stop polluting the forum with copy pastes from your blog.
  3. Even if I don't remember all the specifics or use half of the things I learned, I think it is a mistake to grade the usefulness of a course based purely on what you perceive to be the direct utility of the subject matter in day to day life. If nothing else, the things you learn in high school (and beyond) will help you to foster skills in critical analysis, problem solving and communication, provided you are willing to put the effort in. For me, those skills were the most practical ones I took away from high school. If I could give high-school me any advice it would be to relax a little, and be humble.
  4. ! Moderator Note You are only permitted one thread on a given topic. Furthermore, you are required to support your claims with evidence and engage in discussion. This is not a place to advertise your blog.
  5. I believe that was me. IIRC. the poster was advertising some kind of chemical supply company in their profile.
  6. An example of a monoatomic ion would be Cl-. It has clearly taken electrons from somewhere to get there and would have a counter ion, but it is still monoatomic. You don't need a covalent component for it to be ionic.
  7. I'm not sure I see how you do that on the level required without causing a whole heap of environmental damage.
  8. You would also see it named N,N'-dimethylmethylethane-1,1-diamine. Both this and the 1,1-bis(methylamino)ethane would be correct. In this case, 1,1-dimethylaminoethane should also lead you to the same structure, but only because the other interpretation gives 1,1-dimethylethane, which is an incorrect name (it would be 2-methylpropane). It is still a little ambiguous on first glance. Typically when you are naming functionalised or branched substituents, you would separate their naming into brackets so as not to confuse with the naming of the parent chain. It is also for simplicity. When you have larger molecules that have a lot of functionality and branch points, having the various bits in brackets makes it easier to construct a mental image of the structure. For example: The above is named 2-chloro-N-(4-chloro-6-methoxypyrimidin-2-yl)pentanamide. Without the brackets there, the numbering on the pyrimidine ring becomes ambiguous, since there is no clear way to tell if the numbers refer to the ring or to the parent chain.
  9. The things listed in the reaction are all correct in a general sense, though I suspect you need more specificity than that.
  10. ! Moderator Note We've been here before. http://www.scienceforums.net/topic/92280-help-calculation-probabilities-new-theory/ Thread closed.
  11. The perks of living in Australia. We have two possums that live in the roof of the mass spec room. Yesterday one of them urinated all over a piece of equipment worth many hundreds of thousands of dollars.

    1. Show previous comments  3 more
    2. CharonY

      CharonY

      Totally unrelated but I always find certain types of classification funny that were apparently derived from the marketing section of MS companies (HR vs accurate mass, MRM vs SRM, etc).

    3. Raider5678
    4. hypervalent_iodine

      hypervalent_iodine

      High resolution mass spectrometry.

  12. ! Moderator Note ali_baba, I have once again removed the link to the video. Please stop doing this. Ask your questions and present your ideas here. You shouldn't need a video to carry the entirety of what you're asking.
  13. A food processor would probably work fine, followed by filtering the pulp through something like muslin. I would process it with some water also, just to get it all out.
  14. It's not that I don't want to or can't help you, it's that I think helping you achieve your goal in this manner would be incredibly irresponsible of me. I strongly encourage you to not go down this route. You could, and probably will, end up poisoning yourself. Not only that, but a drug is more than just its active ingredient. Formulation is incredibly important, particularly if you're talking about something like MAOI's and other antidepressants that have to cross the blood brain barrier. MAOI's, at least to my knowledge, have been superseded by newer drugs in recent years. Please consult with your doctor about what is available to you before you attempt to make them yourself. You almost certainly will not succeed, and will most likely end up hurting yourself.
  15. I'm sorry, but I'm not willing to help you in this case. Not that it would help if I did, since I doubt you would have access to any of what you need to make it. The drug you're trying to make is prescription only. You should go and see your doctor. It would honestly be easier (and cheaper). Synthesising this when you don't really know what you're doing is dangerous for several reasons. You could hurt yourself very easily through incompetence, simply because you aren't familiar enough with this sort of thing. You also won't be able to accurately test your reactions for success or purity, making the whole idea of consuming what you've made an especially terrible one. You're more likely to wind up poisoning yourself.
  16. ! Moderator Note Do you have a question to discuss here, or are you positing your own ideas?
  17. Two questions. 1.) Why do you want to make it? 2.) Are you familiar at all with organic synthesis? My guess is not really?
  18. We're not here to do your homework for you. Which part of this question is confusing to you?
  19. ! Moderator Note We ask that members not use mere opinion to answer genuine scientific questions. You should look at the link ajb posted. This has a good explanation. Do not respond to this mod note within the thread.
  20. That reaction requires you balance it via half equations, so the obvious approach is to start with basic versions of those and work up to balancing them in acidic and basic solutions.
  21. We either just live with it, or complain to management. It would have to be pretty bad for me to complain. Generally speaking, I don't think the standards are as high here in your typical mid tier restaurant. So long as the right order comes out in a timely fashion, then it's all good. I've noticed that in the US, service staff tend to be more welcoming and friendly than you normally would see here. I've certainly never hesitated to tip while in the US, especially after having seen how difficult was for a friend of mine to make ends meet working 4 + days a week delivering food during college. It is not an easy life. He was paid $4 per trip plus whatever he made in tips. That sometimes meant he made barely enough to cover fuel. A similar level job here would earn me over $20 / hour, with double time on Sunday and time and a bit on Saturday. I could earn enough in a weekend to meet all of my bills during high school and Uni.
  22. You'll need to show some effort and outline where you actually need help.
  23. To do what, exactly? Pretty much any decent piece of equipment for analysis will run you into the many thousands of dollars.
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