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Determining Number of Moles Question

  1. Feb 11, 2008 #1
    Hello. Just need this answer checked. Thanks.

    If we can reasonably treat acetone vapor as an ideal gas at the Tboil =70° C and we approximate the volume of a Hickman still as ~25mL then how many moles of acetone are in the vapor phase inside the still? (PV=nRT) (R=0.0821 L*atm/mol*K) (Get conversion of P & T in right form.)

    Answer:-

    T= 70+273=343K
    P=0.736/760=9.68x10-4atm
    R=0.0821 L*atm/mol*K
    V= 25x10-3L
    n=no.of moles = PV/RT= 9.68x10-4atm x 25x10-3L /(0.0821 L*atm/mol*K x 343K)
    = 8.59x10-7
     
  2. jcsd
  3. Feb 11, 2008 #2
    Sure
     
  4. Feb 11, 2008 #3
    Is my work/answer correct?
     
  5. Feb 12, 2008 #4
    Sure
     
  6. Feb 12, 2008 #5
    lol, yes it is correct!
     
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