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1. 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 ....
2. (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:

where 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 , the mean square velocities in the x,y,z directions are equal

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