The root mean square (rms) speed predicts the speed of gaseous molecules with a certain kinetic energy at a specific temperature
Where: R is the universal gas constant (8.315 J/mol-K)
T is the temperature in Kelvin
M is the molar mass of the gas (in kg/mol)
We are asked to determine the urms of carbon dioxide in Mars where the temperature is -63°C.
Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63°C.
What is the rms speed of a molecule in Mars' atmosphere? Assume R = 8.315 J/mol•K.
Express your answer to two significant figures and include the appropriate units.
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