anonymous
  • anonymous
If the entropy change for a system at 100.0°C is -20.0 J/K, then which of the following describes the heat? A. 7.46 kJ of heat added B. 2.00 kJ of heat removed C. 2.00 kJ of heat added D. 7.46 kJ of heat removed *thanks:)
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
hint: this formulas, in general, holds: \[\Large \Delta S = \frac{Q}{T}\]
Michele_Laino
  • Michele_Laino
formula*
anonymous
  • anonymous
-20/100?

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anonymous
  • anonymous
:/
Michele_Laino
  • Michele_Laino
no, we have to write the inverse formula, then we have to compute the absolute temperature \[\Large T = t + 273\] \[\Large Q = T\Delta S\]
anonymous
  • anonymous
ohh okay! so 373 * -20 ? and we get-7460? so that means choice D? 7.46 kJ heat removed? since it is negative?
Michele_Laino
  • Michele_Laino
that's right!
Michele_Laino
  • Michele_Laino
congratulations!!!!!
anonymous
  • anonymous
yayy!! thank you:)
Michele_Laino
  • Michele_Laino
thank you!! :D

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