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Unformatted text preview: 0.08206Latm/molKPV = n(.08206)Tex: calc. p o 0.010mg N2 in a 5.0L tv tube at rm temp (23C).p = (.08206)(300)(3.6x10^7)/5 = 1.6x10^6atm (near vacuum)n = 0.010mg = 3.6x10^7mol Speeds of moleculesUrms = root mean square speeds = Urms = (u^2)^(1/2)proportional to Tinversely proportional to MMs = Urms = (3RT/MM)^(1/2)on dist. Graphmax = avg. speedspeed most molecules haveKE = .5mv^2kinetic energy of gases in same flask is equalUrms (O2) at SATP((3x8.314x302)/32)^(1/2) = 482m/sR = 8.314J/molK Demo (balloon in N2(l)):V/T = V/TV1 = 1L, T = 302T2 = 196 + 273V2 = . 25Lhow else could we reduce V to .25L?change pressure (PV = PV)...
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This note was uploaded on 04/23/2008 for the course CH 151 taught by Professor Stevens during the Fall '08 term at Whitworth University.
 Fall '08
 Stevens
 Chemistry

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