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Everything posted by rktpro

  1. rktpro

    Sound question

    Studiot-Sir, can you predict if the difference in intensity between two sides, or say the difference in amplidue (mean); in air and in water, would have any relation with the bulk modulous of media.
  2. rktpro

    Sound question

    Studiot, can you measure the intensity on both sides when the apparatus is in water, A medium of higher bulk modulous?
  3. I guess, it is because of possible H bonding that occur with O atoms of SO42- and H atoms. In other words, hydration emergy of sulphate group released is high and association with water is highly favourable.
  4. Vasileturcu, any introductory text on modern physics will enlighten you. Else, try to study the simple experimental results of photoelectric effect. By the wave picture, how ever small the frequency, a high intensity must result in electron emission. A threshold frequency is then not required. I feel, that rather than fooling yourself, why don't you pick up a book and just try to predict all the plots and formulas without reading text. Then, when you read the text and understand where you went wrong, it won't take anyone else to tell you.
  5. Richard Feynman, because from his lecture books could I entertain myself.
  6. I once read somewhere that the body makes antibodies against gluten. It feels as if gluten is harmful. My friend just yesterday went for a test to check if he were allergic to gluten. Maybe, you could research more on the medical tests.
  7. Like in lakes, ice formation takes time and layer thickness increases with time. You can even calculate its rate!
  8. You mean it is adsorption and not absorption or say sorption? If it is physisorption, which is pointed out, then it shouldn't be much of a trouble.
  9. Charge of a polyatomic ion is defined. You must understand the difference between charge and oxidation number(not oxidation state, to be precise).Read definition, the charge an atom would aquire if all the covalent bonds of it in a bonded state are cleaved heterolytically, taking account of electronegativities.
  10. Over-confidance, Sir. Certainly. I have a habbit of establishing the logic behind inorganic reactions. Reaction mechanisms are not quite common in books and sources and when I see a reaction I try to establish its identity. I do it with redox, quite easy, with reaction between oxides etc. Ignorance of the fact that Enthalpy points out, I might have failed considering that. But, both copper and platinum have ccp lattice. If Enthalpy is right, then gallium diffuses equally well in both.Isn't it?
  11. In both cases it would be against you. You are not telling the adverse effects of your product while the buyer/taker is innocent. I would propose one: What makes a child so determined to learn to walk when he fails many times trying so, how is he inspired?
  12. At around 150-200c there is little chance that you loose Cl from the ring. The yield, I guess, will be lower due to steric reasons but -I of Cl would make the carbonyl more reactive for attack, hence it is to be determined experimentally. Urea would be in vapour phase but not the acid at that temperature.
  13. Bewildering. I wonder how the reagent exists: 3 lone pair containing atoms on tetrahedral carbon. I can't think of reaction mechanism. Someone else will enlighten us.
  14. Sorry, I use a mobile device. I meant to say cyclohex-1-ene or simply cyclohexene. I think my point is clear? English is not my first language.The 12 electron make two separate aromatic rings. By saying that 8 pi electrons, that they make ring current; you challenge the very existence of the compound. You make it anti-aromatic not non-aromatic.
  15. Imatfaal-I use mobile device and it is very difficult to handle, its touch screen and to input a parenthesis I have to touch thrice. You made a mistake in the second term of my calculation though. Forgot to include the arrangement term.
  16. I googled 'gallium reacts with platinum' and got no info about the reaction. That is why I asked you whether you predicted the reaction yourself. I admit that in my knowledge Platinum is nobel and I don't know of any reaction between it and metal like aluminium. Please post the reaction in your next post.
  17. Let us denote the cases as ABCD(all colours differ) AABC and AABB.I don't know how to input math. My calculation is 6p4+6(5c2)(4!/2!) +6c2[4!/(2!)^2]. I get 1170.
  18. John, how do I predict that gallium reacts with platinum? From the electrode potentials?
  19. John, the 8 electrons don't make a ring current as an sp3 carbon is there too.Cyclohexe-1-ene has 2 pi electrons but is non-aromatic.It can, I feel, be determined experimentally only if the compound is quassi aromatic or not,i.e, the gain in aromatic stabalization compensates the separation of charge-where the carbocation is highly unstable with no hyperconjugation.
  20. You want to show that gallium conducts? I wonder where you picked the idea. There are better projects to do at your level. You need inert electrodes like platinum, though. That info is not all to actually carry out the work.
  21. John puts it right. Solubility has nothing to do with melting point. Energetically, new association with solvent and breaking of solute solute forces must be favourable.
  22. I personally feel that videos can't match books. Hall and Knight's Algebra. S.L Loney's geometery and trignometery. Ultimate and classic books. No fun facts or anything. They will enhance your interest by genuine exercise and presentation.
  23. Not possible in any way. Conservation of energy always holds.
  24. Dangerous is jerk-rate of change of acceleration.
  25. I wonder why we say 'my body'. Are we something else? Is anyone out there who sayes 'I body'?
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