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Partial pressure

  1. Jan 29, 2005 #1
    A mixture of 5.40 g of N2 and 10.2 g of Kr exerts a pressure of 0.505 atm.
    What is the partial pressure, in atm, of Kr?
     
  2. jcsd
  3. Jan 29, 2005 #2

    Gokul43201

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    parwana, please show what you've tried, when you need help with a problem.
     
  4. Jan 29, 2005 #3
    I just dont get the problem at all, i mean does this mean volume and temperature are constant and if so do i make up any numbers for the temp and volume and substitute in the equation pv=nrt??

    pleASE help
     
  5. Jan 29, 2005 #4
    i got it, i got the mole fraction of Ke and then times thta by total pressure.
     
  6. Jan 29, 2005 #5

    Gokul43201

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    If you meant "Kr", then yes, that's correct. With any such problem, you want to start from the definitions. In this case, the definition of 'partial pressure' is all you need.
     
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