1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gas Law Help!

  1. Dec 6, 2012 #1
    1. The problem statement, all variables and given/known data

    bar of metal is at temperature T1 = 678 °C. Suppose the average kinetic energy of the molecules in the metal is multiplied by constant a = 9.49. Find T2, the new Celsius temperature.

    2. Relevant equations

    [itex]KE_{avg} = 3/2 kT[/itex]

    3. The attempt at a solution

    I worked out this way:

    [itex]KE_{avg} = 3/2 kT_{1}[/itex]
    [itex]aKE_{avg} = 3a/2 kT_{1}[/itex]
    [itex]3a/2 kT_{1} = 3/2 kT_{2}[/itex]
    [itex]aT_{1} = T_{2}[/itex]
    [itex]9.49 * (678 + 273) - 273 = T_{2}[/itex]
     
  2. jcsd
  3. Dec 6, 2012 #2
    Is it correct, or did I do something wrong?
     
  4. Dec 7, 2012 #3

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Looks right to me.
     
  5. Dec 7, 2012 #4

    rude man

    User Avatar
    Homework Helper
    Gold Member

    right.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Gas Law Help!
Loading...