Question

Calculate the root mean square velocity of nitrogen molecules at 25°C

Has to be in kg/mol
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Answer #1
vrms = square root ( 3RT / M )

where R is 8.314 J/K-mol
T is temperature in kelvin (25C is 298K)
M is molar mass of N2 which is 28g/mol

At 25C, vrms = square root (3*8.314*298 / 28) = 16.3
answered by: sam help eng please
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