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Do i need more data to solve this ideal gas problem

  1. Jan 24, 2008 #1
    1. The problem statement, all variables and given/known data
    IF I know P and V at point a,
    and V and T at point b, can i find P2 at point B, or is more info required to solve???

    (i attached the graph)

    point a

    known
    Va = 5L
    Pa = 2atm

    unknown
    na = ?
    Ta = ?

    point b

    known
    Vb = 5L
    Tb = 300K

    unknown
    nb = ?
    Pb = ? (this is what i want)


    2. Relevant equations
    Is it actually possible to get pressure at point b, or is more info required????
    thanks


    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Jan 24, 2008 #2
    if i equate 2 PV=nRT equations to each other, then "n" ends up cancelling (fixed amount) and then after all the calcs i always end up with 2 variables, so unsolvable
    i end up with .

    TbPa = constant

    ????
    please help, thanks
     
  4. Jan 24, 2008 #3
    please disregard ---i figured this one out
    thanks anyway to anyone
    (i used info from point C to solve.
    I figured out that it was unsolvable with only the data from points a and b
     
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