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problem20_34

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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20.34: a) On the average, each half of the box will contain half of each type of molecule, 250 of nitrogen and 50 of oxygen. b ) See Example 20.11. The total change in entropy is ln(2) ) ( ln(2) ln(2) 2 1 2 1 k N N kN kN S + = + = K. J 10 5.74 ln(2) K) J 10 381 . 1 )( 600 ( 21 23 - - × = × = c) See also Exercise 20.36. The probability is ( 29 ( 29 ( 29 , 10 4 . 2 2 1 2 1 2 1 181 600 100 500 - × = = × and is not likely to happen. The numerical result for part (c) above may not be obtained directly on some
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Unformatted text preview: standard calculators. For such calculators, the result may be found by taking the log base ten of 0.5 and multiplying by 600, then adding 181 and then finding 10 to the power of the sum. The result is then . 10 4 . 2 10 10 181 87 . 181--× = ×...
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