Recent content by jimRH9

  1. J

    Delete Account: Step-by-Step Guide to Removal

    I want to delete my account and along with all of my posts for private reasons. What procedure do I need to follow to do this?
  2. J

    Medical What does your liver do with alcohol?

    If You drink a lot of alcohol, you do not become permanently drunk. It is common for people to say that your liver does the job of getting rid of it, But How does it do it?
  3. J

    Graduate What is Internal Energy + Pressure * Volume

    Exellent, I think i'll include both temprature and hysterisis in the discussion. As well as the obvious and most probable cause, that the gas leaked out.
  4. J

    Graduate What is Internal Energy + Pressure * Volume

    well, that's what i thought it might be. However, the lab supervisor mentioned an effect called hysterisis, I had a quick look on wikipedia for it, but i haven't found very much useful stuff on it other than what's in the wiki article. I'm thinking of saying that, Once all the pressure has been...
  5. J

    Graduate What is Internal Energy + Pressure * Volume

    Hmm, I was thinking about this today. we did an experiment where we put a gas under pressure and measured the volume to verify boyle's law? But when we removed the pressure, it did not return to it's original volume. I am assuming this is because of frictional effects with the piston and the...
  6. J

    Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?

    ach, It doesn't matter, I handed in the report today anyway. Thanks anyway.
  7. J

    Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?

    Sorry to bump my own thread, but this report has to be in for 2 tommorow, and I've got lectures all day, so it is a matter of some urgency.
  8. J

    Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?

    I'm not really sure what you mean, I know what dissociation is I know the salt forms Na+ and Cl- in water, but there's nothing about that in the equation...
  9. J

    Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?

    Sorry, i posted it in a rush. Can I move it myself, Or does a moderator have to do it?
  10. J

    Undergrad Why is the boiling point elevation of NaCl solution higher than calculated?

    Hullo. I'm doing a lab report on boiling point elevation, and we have to answer the question: "the boiling point elevation is higher than the calculated value, Why?". as a question on the side. In the experiment, the solution is 30g/l NaCl in water. The equation used to calculate the calculated...
  11. J

    Why does oil stick to steel better than water?

    Thanks folks!
  12. J

    Why does oil stick to steel better than water?

    OK, so My description of the machine's mechanism will probably be something along the lines of: Oil adheres better to the metal, due to it's lower surface tension. A lower surface tension means it requires less energy to adhere to the surface of the metal, compared to water. the lower energy...
  13. J

    Why does oil stick to steel better than water?

    I understand surface tension. I don't understand how it makes the oil stick to the steel.
  14. J

    Why does oil stick to steel better than water?

    Hullo, I'm new here, so I'm not really sure where to post, but i supposed my question would come under physical chemistry. I am writing an essay on separation techniques in the oil industry, and I came across this machine...