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!

Unit conversion

  1. Sep 17, 2007 #1
    1. The problem statement, all variables and given/known data

    "convert the gas constant, R, into units of ft•lbf/lbmol•°R.
    Data: R = 8.31451 J/mol•°C.

    2. Relevant equations

    I know 1 J = 0.22481 lbf

    but what's R, and how they can get ft and lb in there?

    3. The attempt at a solution
  2. jcsd
  3. Sep 17, 2007 #2


    User Avatar
    Homework Helper

    Is that exactly how the question is given? I'm confused by lbmol... shouldn't it just be mol ?


    1 N = 0.22481 lbf, not 1 J.
  4. Sep 17, 2007 #3
    yes, I just copy pasted from that assignment(given to us in a word document)
    I think it is then lb mol
  5. Sep 18, 2007 #4


    User Avatar
    Homework Helper

    These are some tricky units. A regular mole in SI units = 1 gram mole. 1 K = 1.8 R. R is rankine a scale of temperature.
  6. Sep 18, 2007 #5
    Thanks a lot!

    yesterday, I forgot to see the unit conversion handouts provided, and these were in there.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Unit conversion
  1. Unit conversions (Replies: 3)

  2. Unit Conversion (Replies: 1)

  3. Unit Conversion liters (Replies: 1)

  4. Unit Conversion (Replies: 3)