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MMLU-Pro / 11440 / Two pounds of oxygen undergo a polytropic process in which they are compressed…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Two pounds of oxygen undergo a polytropic process in which they are compressed from an initial state of 14 psia and 70°F, to a final pressure of 98 psia along a path for which PV^1.3 = C. Using the polytropic equation calculate, (a) the heat transferred, and (b) the change of entropy for this process. Assume that for oxygen R = 0.062 Btu/1bm-°R c_p = 0.217 Btu/1bm-°R

category

engineering

options

  1. (a) - 34.2 Btu, (b) - 0.0166 Btu/°R
  2. (a) - 36.2 Btu, (b) + 0.0034 Btu/°R
  3. (a) - 28.2 Btu, (b) - 0.0666 Btu/°R
  4. (a) - 32.2 Btu, (b) - 0.0366 Btu/°R
  5. (a) - 30.2 Btu, (b) - 0.0566 Btu/°R
  6. (a) - 29.2 Btu, (b) - 0.0566 Btu/°R
  7. (a) - 35.2 Btu, (b) - 0.0066 Btu/°R
  8. (a) - 27.2 Btu, (b) - 0.0766 Btu/°R
  9. (a) - 31.2 Btu, (b) - 0.0466 Btu/°R
  10. (a) - 33.2 Btu, (b) - 0.0266 Btu/°R

src

stemez-Thermodynamics

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Source and history

upstream_id / Original problem ID
11440
task_id
b6cb72d8-1519-507b-a73b-e3b04cbe5a7e
task_key
default--test--11440
task_revision_id
1
config / split
default / test

Official source

initial import