Recent content by kankerfist

  1. K

    Know where to find any Quantum Mechanics practice problems?

    Also, if anybody else is looking too, here are some resources I've dug up: http://lanl.arxiv.org/abs/physics/0004072 Found this on physicsforums, tons of notes on QM and a few examples for each topic http://mini-me.chem.uh.edu/pchem07/page0/page17/page17.html -Professor put 17 of his old QM...
  2. K

    Know where to find any Quantum Mechanics practice problems?

    I have a Quantum Mechanics test on Wednesday and I was wondering if someone could recommend somewhere for me to find some practice problems and answers. I've googled and found some practice tests, but they don't have any answers for me to make sure I'm doing them right. The book I have is...
  3. K

    (very) nonstandard reduction potential

    It is 10^-6! That little typo caused me all kinds of headache. Also, your balanced half reaction is exactly how I would have done it too, but the one above was provided by my professor and is a valid half cell reaction. I'm not exactly sure why it is that way, but I double checked on...
  4. K

    (very) nonstandard reduction potential

    I have a question that I am familiar with, but there is no answer provided and about 1000 ways to make small mistakes. I was hoping someone could take a glance and see if any mistakes jump out. Any tips would really be appreciated. Question What is the reduction potential required for reducing...
  5. K

    What are the oxidation numbers in [Re2Cl9]2- and how can it exist?

    Ok, finally figured it out above. I am trying to balance this equation, and in order to break it into half reactions, I need to know the ox #'s of each atom to see which is the reduction half and which is the ox half. If the Re is 3.5 like you say, then am I on the right track that the...
  6. K

    What are the oxidation numbers in [Re2Cl9]2- and how can it exist?

    {ReCl}_5} + {{H_2}O} --> {Re_2}{Cl_9}^{2-} + {ReO_4^-} + {Cl^-} + {H^+}
  7. K

    What are the oxidation numbers in [Re2Cl9]2- and how can it exist?

    Ok, I'll test it by quoting someone that used it sucessfully. ^{33}_{17}Cl^{16}\xrightarrow{n,n}~^{31}_{15}P^{16 }+~^4_2He^2
  8. K

    What are the oxidation numbers in [Re2Cl9]2- and how can it exist?

    Sorry about no latex, when I try using latex my formulas just wind up as a link that says "LaTeX graphic is being generated. Reload this page in a moment." Anyway, I was trying to balance a redox equation and I am completely stumped as to how: [Re[SIZE="1"]2Cl[SIZE="1"]9]^2- can...
  9. K

    Calculate Average of Top 5% of Biology Test Scores

    I have some statistics on a test from my biology class and I was wondering if there is enough information provided by the stats to be able to calculate the average of the top 5% of scores. I have used a graph in mathematica to get a pretty good idea of what the top 5% average is, but I was...
  10. K

    Frequency for ionization of hydrogen

    Homework Statement Does an AM radio station broadcasting at 750 KHz emit enough energy to ionize a hydrogen atom? Homework Equations Frequency = 7.5E+5 /s Ionization E of H atom = 2.18E-18 J Planck constant h = 6.625E-34 J-s AM Radio speed = c Energy AM radio wave = h*frequency...
  11. K

    Interference fringes with reflected light

    You just made me slap my forehead! Thank you kindly for pointing out the obvious :)
  12. K

    Interference fringes with reflected light

    Well, I made a diagram: I thought it might help, but I still haven't even figured out where to start.
  13. K

    Interference fringes with reflected light

    Homework Statement A point source of light (λ = 589 nm) is placed 0.4 mm above the surface of a glass mirror. Interference fringes are observed on a screen 6m away, and the interference is coming from light reflecting off the mirror and light coming directly from the source. Find the...
  14. K

    Calculating Interference Fringe Spacing with a Point Source and Mirror

    Maybe this picture will help: Phase difference at point P will be: pi + (a + b)(2 pi) / wavelength Maybe I need to find a function that gives the phase shift at point P in terms of (a + b)...not sure though
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