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PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / Adiabatic processes

An insulated compression stores the work

A monatomic ideal gas with initial pV = 80 J is compressed reversibly and adiabatically to one eighth of its original volume.

What work is done on the gas?

Organize the givens & assumptions
  • piVi = 80 J
  • Vf/Vi = 1/8
  • γ = 5/3

Closed fixed amount of ideal gas, constant stated heat capacities, negligible bulk kinetic and gravitational energy changes, and only pressure–volume work. Heat into the gas and work by the gas are positive.

  1. A480 J480\ \mathrm J
  2. B−360 J-360\ \mathrm J
  3. C360 J360\ \mathrm J
  4. D120 J120\ \mathrm J

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