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dttom

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Everything posted by dttom

  1. Is there any simple way to turn sulphurous acid into sulphuric acid? I mean the simple one, not so complicated that can be done at home...
  2. In simple chemical cells, electrons go through the external circuit. In your case, Mg gives up the two e- to form Mg2+, the e- given out then go through the external circuit to the positive terminal then to H+, this results in the formation of H2; while the result solution is MgCl2 because of Mg2+ and Cl-. The movemento of e- through the external circuit results in a current.
  3. May be he's right.
  4. What about CaSO3?
  5. First, Mr luky16_dream, what the feeling you give me is that you're playing about. But anyway, answer your question first... First of all, you haven't answer my first question yst, that's what's the gene cloning for, different purpose of cloning will have different result. However, I think there won't be a great impacts on environment if the guys working in this sector is not evil. In contrary, the problems of religions, humanism and also immorality may be more annoying. However, I don't think the 'problems' I mentioned above is really some problems. It's good to develop this technology.
  6. Ar... A simple and silly question... I'd like to know whether sulphites is soluble in water...
  7. Gene cloning for what?
  8. I've also thought about this before, I think that's great if we can make it, but what hidder us is something about human morality.
  9. That means the death of human or other speices is because of the over-demage of organs inside their bodies caused by oxygen(not only oxygen but may be many other substances)? But why the organs of someone dead can be instal to another's body, and still functioning? I don't think the death of livings is just based on the demages of internal organs only, may be there're many other factors... I'm not sure, just my opinion...
  10. First I don't know whether chromosome 6 is related to intelligent, but I'd like to say that, if there's really some relations, those genes almost can't be functioned by themselves, genetic factors have to cooperate with environmental factors to work out the performance.
  11. I believe that human being just know very little about themselves, now, we can just recognize a little parts of enzymes, and there are still many many unknown enzymes existed in our bodies. Also, because of this reason, we have the motivation to explore more.
  12. Then, you mean they have the same average KE?
  13. The question is: when two bodies with the same thermal conditions, is the average kinetic energies in those two bodies the same? The answer is their temperature is the same. And recall that their average kinetic energies isn't the same. I'm not very understand about this, I wonder to get an answer. What in my mind is the total average kinetic energy of all the particles inside a body is directly proportional to its temperature, so I think if two bodies have the same thermal conditions, then their average kinetic energies as well as temperature are both the same. Anything wrong in my above sentences?
  14. Thanks for your websites first. The suggested books seem to be quite interesting, but sadly, I'm in Hong Kong, not Canada, so, may be it's a bit hard for me to find the books...
  15. Can you suggest some related web sites?
  16. My teacher told me that the shape of H2O is V-shape because the six outhermost e- will be divide into four group, the two group with only one e- will link to 2 H atom. The two H atoms are just like the angles of the base and the O atom locate at the top of the pyramid. Then my question is, if theouthermost e- can be divided into 4 groups, will atoms inside always link in a structure like a square-based pyramid? For example, carbon, there're 4 outhermost e-, can I divide those 4 e- into 4 groups, each group has one e-, is the carbon atoms inside a diamond are always linked like a square-based pyramid? When I view the structure of diamond, it doesn't seem to be... Then what's the principle for linking atoms?
  17. May be those drugs bind with NMDA receptors and allow more Ca2+ get into neurons...
  18. And there's another question related to covalent bond, that is, which type of covalent bond is stronger, single, double or triple covalent bond? Nitrogen atoms in its molecule are held by triple covalnet bond, compare with oxygen, nitrogen takes part less in chemical reactions, does it mean triple bond is stronger than double bond and so on? But why double bonds in organic compounds are weaker than single bond?
  19. How about the second question? Is the mixture react in such way and become colourless?
  20. Then whether my half-ionic equation is correct or not? SO3 2- + H2O-> SO4 2- + 2H+ + 2e-
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