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Thermometer pressure physics problem

  1. Nov 2, 2007 #1
    1. The problem statement, all variables and given/known data
    A constant volume gas thermometer has a pressure of 5830 Pa at 47 °C. What would the pressure be for -99 °C (in Pa)?



    2. Relevant equations

    Pf = Pi * (Tf/Ti)

    3. The attempt at a solution

    Ti = 47 deg C = 320 deg K
    Tf = -99 deg C = 174 deg K
    Pi = 5830 pa = 0.05755 atm + 1 atm = 15.55 psi
    15.55psi * (174/320) = 8.46 psi....Is this how you do it?
     
  2. jcsd
  3. Nov 2, 2007 #2
    or do i leave it in atm?
     
  4. Nov 4, 2007 #3
    Does anyone know how to do this?
     
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