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March 26, 2017

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31m/s is a typical highway speed for a car. At what temperature do the molecules of nitrogen gas have an rms speed of 31m/s?

T=[(x^2)*m]/3k
so
x=31m/s
m=N2=2*14=28g=.028kg
k=1.38e^-23..I'm keep getting 6.333651477e^10...which is incorrect. What am I missing?

  • Physics - ,

    Molecules of N2 do not have a mass of .028kg. Perhaps a mole of them have that mass, so divide by avagrado's number for the mass of each.

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