Recent content by kittassa

  1. K

    Half equation for S2O32-/S4O62- couple

    I need to write the half equation for the S2O32-/S4O62- redox couple but I'm having trouble because they have the same ioic value. I've come up wth two solutions but am happy with nether... S2O32- + 3H2O + S2= S4O62- + 6H+ + 6e- or 2S2O32- = S4O62- + 2e- I know that the second one...
  2. K

    Calculating the resistors value?

    it does make sense, but I don't know how to do that... or is that what I've done? Is the Vled value there just as extra information that isn't needed or?!?...
  3. K

    Calculating the resistors value?

    Calculate the value of the resistor using the following information: Vs=9volts, Vled=3volts, and Iled=10mA I'm assuming that it's just Ohm's Law R=V/I, but I don't know which of the two voltages I use, though I think its the Vs...but I don't know what the 's' stands for either. this...
  4. K

    Whats the equation for uncertainties of a gradient?

    i need to know the formula for calculating the uncertainty of a gradient from a graph. the gradient is being used to calculate the moment of inertia but i can't calculate the error in my I cause i don't know how to calculate the error in my M! when i did the experiment, i assumed the error to...
  5. K

    Understanding the Conceptual Gap in Charles Darwin's Theory of Evolution

    Not cynical at all are you?!? wouldn't call myself a kid, (24 - I know, how ancient!) but definitely asking for help with bio assignment, is very late and still no clue... have sadly run out of coffee... woe is me :( personally have no time for creationists - twats don't think animals...
  6. K

    Understanding the Conceptual Gap in Charles Darwin's Theory of Evolution

    the source is a Biology assignment, and the question is "In 1859, Charles Darwin published Thw Origin Of Species in which he presented ideas on the causes of organismic change through time. A primary conceptual gap existed which left his theory open to criticism. What was that conceptual gap?"...
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