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Unformatted text preview: Since the writing of this Text, gases have been trapped at temperatures of 10. pico-Kelvin. A pico-Kelvin is 10-12 o K, exactly. a) Compute the RMS (root mean square) speeds of Na atoms at these two temperatures, that of problem 42, and the new lower record low temperature for a gas of Na atoms at a temperature of 1.0 x10-11 o K, in meters/sec and miles/hour, for these two trapped gases. b) How long (in seconds) would it take an average RMS speed Na atom to cross our class room, BAG 261 at a kinetic energy corresponding to 10. pico-Kelvin =1.0 x 10-11 o K? What would the same time be for a room temperature Na atom? You will need to make a reasonable estimate of the size of Bagley 261; be sure to state what that estimate is, in meters. You make take Room Temperature as 298 o K. c)With the data as given, to how may significant figures should you present your answers?...
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This note was uploaded on 01/18/2012 for the course CHEM 145HA taught by Professor Reinhardt during the Fall '11 term at University of Washington.
- Fall '11