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Biology with MasteringBiologyâ„¢ (8th Edition)

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  MULTIPLE CHOICE.  Choose the one alternative that best completes the statement or answers the question.  1) 
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A sealed  29   tank is  filled with  9000 moles  of ideal  oxygen gas  (diatomic) at  an initial  temperature  of    The gas is  heated to a  final  temperature  of  330 K.  The atomic  mass of  oxygen is    The initial  pressure of  the gas, in  MPa, is  closest to: 
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1)  _______  A) 
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0.51 
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B) 
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0.61 
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C) 
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0.88 
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D) 
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0.70 
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E)  0 . 9  
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An  aluminum  rod is  10.0  cm long and  a steel rod is  80.0 cm long  when both  rods are at a  temperature  of    Both rods  have the  same  diameter.  The rods are  joined end - to - end to  form a rod    long. The  coefficients  of linear  expansion of  aluminum  and steel are    and    respectively.  The  temperature  is raised to   The  increase in  the length of  the joined  rod, in mm,  is closest to: 
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2)  _______  A) 
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0.99 
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B) 
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0.72 
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C) 
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0.63 
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D) 
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0.81 
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E)  0 . 0  
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 69.5 cm  49.3 cm A brass rod  is  69.5 cm  long and an  aluminum  rod is  49.3  cm long  when both  rods are at  an initial  temperature  of   The  rods are  placed in  line with a  gap of    between  them. The  distance  between the  far ends of  the rods is  maintained  at 120.0 cm  throughout.  The  temperature  is raised  until the two  rods are  barely in  contact. The  coefficients  of linear  expansion of  brass and  aluminum  are    and    respectively.  In the figure,  the temperature at which contact of the rods barely occurs, in °C, is closest to: 
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3)  _______  A) 
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420 
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B) 
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513 
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C) 
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466 
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D) 
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490 
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This document was uploaded on 04/16/2010.

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