Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Initial Mass of Oxygen + Mass of Oxygen leaked out

  1. Sep 22, 2008 #1
    1. The problem statement, all variables and given/known data

    A welder using a tank of volume 7.50×10−2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol) at a gauge pressure of 3.00×105 Pa and temperature of 37.1 C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 23.4 C, the gauge pressure of the oxygen in the tank is 1.85×105 Pa.

    2. Relevant equations

    Find the initial mass of oxygen.
    Find the mass of oxygen that has leaked out.

    3. The attempt at a solution
  2. jcsd
  3. Sep 22, 2008 #2


    User Avatar
    Homework Helper

    You need to show some work and where you are having a problem.

    Homework Help doesn't mean that it gets done for you.

    I see 5 problems you've posted and apparently no work.
  4. Sep 22, 2008 #3
    Hey...I'd love to show some work...and I don't intend on anyone giving me the answers...I just want to know how its done...I've been enrolled in a really hard physics course that I can't get out of...and back in high school my physics class was a joke...so basically I have no background whatsoever....My sincere apologies if I caused any trouble.
    I think I'll just remove my threads...

    Thanks anyways...
  5. Sep 22, 2008 #4


    User Avatar
    Homework Helper

    It's no trouble, if you just show some work and make an attempt.

    The idea is that you learn.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook