Question Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63 ?C. Part A What is the rms speed of a

Question Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63 ?C.

Part A What is the rms speed of a molecule in Mars's atmosphere? Assume R = 8.315 J/mol?K. Express your answer to two significant figures and include the appropriate units.