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Chemistry Gas Laws

  1. Oct 16, 2011 #1
    1. The problem statement, all variables and given/known data
    People who are angry sometimes say that the feel as if they will explode. If a calm person with a lung capacity of 3.5L and a body temp of 36C gets angry, what will the volume of the persons lungs be if their temp rises to 39C.

    2. Relevant equations
    V1/T1 = v2/T2

    3. The attempt at a solution
    I did it like this:
    Declared variables; v1=3.5L, v2 = *?*, T1 = 36C, T2=39C

    put them into the formula; 39(3.5) = 36(V2)
    and ended up getting 3.79L instead of the correct answer which is 3.53L.

    Obviously I have zero idea of what I am doing if I get an answer wrong. Only answer if you understand what you're talking about. Thanks.
  2. jcsd
  3. Oct 16, 2011 #2


    User Avatar
    Science Advisor

    When using gas laws, you should always use absolute temperature (temperature in kelvins)! Otherwise, the way you set up the calculation is correct.
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