1. Not finding help here? Sign up for a free 30min 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!

Setting up linear equations for problems dealing with specific gravity.

  1. Sep 24, 2005 #1
    I can not, for the life of me, figure out how to set the following up into a system of equations.

    An object composed of x gram-mole of lead (specific gravity 11) and y gram-mole of tin(specific gravity 7) weights 82 gram-moles in air and 77 gram-moles in oil of specific gravity of 1/2. Find x and y.

    Finding x and y is simple, if I could figure out the right way to set it up...:(
     
  2. jcsd
  3. Sep 24, 2005 #2

    lightgrav

    User Avatar
    Homework Helper

    I would start with a statement of mass addition,
    and a statement of volume addition.
    The buoyant Force (5gram)g = V*(.5gram/cm^3)g
    gives you a way to write the total Volume.
     
  4. Sep 25, 2005 #3
    I still cant get it to come out to the correct answer...
     
  5. Sep 25, 2005 #4

    lightgrav

    User Avatar
    Homework Helper

    "correct answer" might be wrong.
    maybe youmade an algebra mistake...
    what have you done so far?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Setting up linear equations for problems dealing with specific gravity.
Loading...