Recent content by Cesium

  1. C

    Nanotubes in Electric Field

    Or, alternatively, is it because the charges at the each end of the nanotube will be closer to the electrode of the opposite charge?
  2. C

    Nanotubes in Electric Field

    Conducting carbon nanotubes align their primary axises in the direction of static electric field. Why is this? I am thinking that it's because since this is their longer axis, the gradient of the generated electric field within the nanotubes will be less than in the perpendicular case. Is this...
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    Outputting Voltages to a Computer

    Thanks both of you for your help. I just wanted to make sure I was looking at the right type of product before buying something. All I want to do is read the data and be able to record it eventually with something like Excel.
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    Outputting Voltages to a Computer

    First off, I had no idea in which subforum to post this, so moderators feel free to move this if appropriate. I have an old oxygen sensor (electrode) which outputs a DC voltage ranging from 1-5 V which has no interface to a computer. So I was wondering if something like this-...
  5. C

    Refractive index of Vanillin and p-bromobenzophenone

    Probably safe to assume 25C.
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    Fuel Consumed by Oil Refineries

    Hi everyone, I was looking at some data from the Energy Information Association (http://www.eia.doe.gov/emeu/mecs/mecs2006/pdf/Table3_2.pdf\) about the fuel used by different industrial processes. Under the industry of "Petroleum Refining," there is a bit of natural gas and electricity used...
  7. C

    This problem is killing me [calculation of electron transition]

    2.18x10-18 is the Rhydberg constant in joules.
  8. C

    Why does hot water are white?

    Why does hot water have more air bubbles than cold water?
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    NaHCO3 Electrolysis Products

    Nothing would happen to the sodium- it just stays in solution as Na+. Cu+2 ions can be very deep blue.
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    NaHCO3 Electrolysis Products

    Copper hydroxide
  11. C

    Differential v. Integral Rate Laws; Kinetics

    Although this is a differential equation, it is a very simple one to solve. In fact, the other simple rate laws (k[A]2 or k[A]3) are easy to solve as well. It only gets difficult when you include [A] and [B] In order to solve this just integrate (still beyond precalculus level though)...
  12. C

    How to seperate c02 from air?

    Use something like NaOH, KOH, Ca(OH)2. These will react with the CO2 in the air to give the corresponding bicarbonates/carbonates. They won't react with N2, O2, or Ar. Then dry the carbonates in an oven to get rid of the water and then heat them up to decompose them into CO2.
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    Dissolving plant matter

    Have to deal with heavy metal waste then. Also it's unlikely a nonchemist would have access to these materials. Concentrated sulfuric acid (98%) is sold in drain cleaners and is something that the general public does, in fact, deal with. One can carefully neutralize H2SO4 with bicarbonate to...
  14. C

    Simple Cubic Crystal

    The length of a unit cell is usually define as a. Volume should be simple from this. For the volume of atoms, take a look at how much of each atom is in the cell.
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    Dissolving plant matter

    Concentrated sulfuric acid would probably work well. A "Piranha solution" composed of hydrogen peroxide and sulfuric acid is even better and will dissolve almost anything. Note: You need to be extremely careful with these types of solutions. Since they can dissolve the organic matter of plants...
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