Recent content by mrawls

  1. M

    Graduate Does Carbon Dating Take into Account Organisms' Preference for Lighter Isotopes?

    I was told by a professor (I am assuming he was right) that organisms prefer lighter isotopes. So if a tree is in an atmosphere containing 99% O-16 and 1% O-18, the concentration of O-16 in the organism itself (in water, carbon dioxide, etc) will be MORE than the amount in the atmosphere (so...
  2. M

    Can the Coefficient b in Van der Waals Equation Be Negative

    Wow I did forget to list the volume too.. Sorry I had a busy day haha I was not thinking clearly. Using the correct pressure resulted in the right answer, with the right units! Sadly my professor likes to give every value in non-SI unrelated units and we have to do all sorts of conversions :(
  3. M

    Can the Coefficient b in Van der Waals Equation Be Negative

    Yes, sorry I forgot to list them before. a = .580(m^6)(Pa)(mol^-2) T = 273K P = 5,000,000 Pa R = 8.3144 Pa(m^3)/(mol)K I then solved for a(n/V)^2 and plugged that answer into the equation (I got 4734693.9 Pa for that) I actually realized a huge mistake I made when posting these values. The...
  4. M

    Can the Coefficient b in Van der Waals Equation Be Negative

    solving for "b" with van der Waals 1. Homework Statement The problem gives me "a", the temperature, volume, number of moles, and pressure. It asks me to solve for "b". I have set up the equation to solve for b, and done it. The answer comes out with the right units but it is negative...