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Jerryt12

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About Jerryt12

  • Rank
    Quark

Profile Information

  • Interests
    walking outdoor(nature)/thinking
  • Favorite Area of Science
    physic/chemistry
  1. In a hydrogen fuel-cell, hydrogens are passing through a platinum catalyst. As it go through, it's split into hydrogen ions and electron. So how does the platinum catalyst does that? What are the science behind it.
  2. A lot of reactions are simple to predict; the acid-base reaction and the single and double replacement reaction that can be predicted by looking at the activity series. My question was how do you predict an reaction that has to do with nonmetal. For example, how do you know if H2O will react with NO2? Hydrogen is on the activity series but Nitrogen is not since it is a nonmetal. Please do help
  3. sorry, I mean exclude the electrons for now and think about the nucleus itself. Merged post follows: Consecutive posts mergedI know that electron excitation is the phenomenon that is being played, but I am wondering if the atom itself(that is including the nucleus) is also being excited
  4. thanks Merged post follows: Consecutive posts mergedas occur in a fuel cell
  5. why will the voltage drops if you add another load? Did the velocity of the electrons slow down?
  6. In the way battery works, redox reaction is taking place. My question was why does the oxidized electrons (after being used to power motor, ect...) was used to reduce another substance when instead we can keep using the electrons to power another device? or can we?
  7. go to the bottom of the the website for the video http://www.howstuffworks.com/battery.htm The video was great, but it fails to explain why zinc oxidizes in that solution. Merged post follows: Consecutive posts mergedbasically my question was how did zinc loses electrons
  8. A strong acid is a substance that contains high concentration of hydronium ion, basically high concentration of hydrogen. But why are acid so reactive( or dangerous)? Is it because the intermolecular forces between the atoms of the acid are weak? Merged post follows: Consecutive posts mergedLet me re-phase the last sentence. Is it because the intermolecular forces between the atoms of the acid are weak so they are very reactive?
  9. Jerryt12

    Catalyst

    How do scientists know which catalyst to use in different reactions? For example, how do scientists know to use acid for esterification?
  10. atoms form bonds with each other to be stable, right? If so, how come substances like hydrocarbon are so volatile? Souldn't it be stable?
  11. can you give an example? Merged post follows: Consecutive posts mergedthanks, but can you tell by looking at the electron configuration?
  12. I was reading "QED" by Richard Feyman. I understand the method they used to calculate the possibility of partial reflection. But there is one thing that I just can't stop myself from thinking about it, (in the book, they say that the phenomenon of partial reflection can easily be explained by the wave theory of light. (the wave theory collapsed after the developed of instrument that can detect a single photon was invented.) My question was how was the partial reflection easily explained by the wave theory of light? (All that the book had mention was that wave can combine or cancel out, thus explained the partial reflection phenomenon.) But, how did that explain? Merged post follows: Consecutive posts mergedby the way, QED= quantum electrodynamics
  13. Ex: CH4 + 2 O2 ----> CO2 + 2 H2O + 802.5KJ Also, where can we find a list of reactions with their catalyst? Thank you.
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