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    A 1L vessel contains 1 mole of O2 . If the root mean square speed in x direction O2 molecules is <vx2>1/2=200 m s-1 find the pressure (in N/m2) in the vessel

    For this I need some help

    I originally just did the mass of O2 (1/36) x 2 x 200
    but I don't think thats right ....
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    (Original post by jacksonmeg)
    A 1L vessel contains 1 mole of O2 . If the root mean square speed in x direction O2 molecules is <vx2>1/2=200 m s-1 find the pressure (in N/m2) in the vessel

    For this I need some help

    I originally just did the mass of O2 (1/36) x 2 x 200
    but I don't think thats right ....
    1. From kinetic theory, the pressure and volume of gas in a container are related by:

    pV=\frac{1}{3}Nm\bar{v^2}

    where N,m,\bar{v^2} are number of (identical) molecules in the container, the mass of each molecule and the mean square speed respectively. You need to convert this into something you can use with a mass of gas (or maybe better, with moles of gas)

    2. Assume that for a large N, the mean square velocities in the x,y,z directions are equal
 
 
 
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