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MMLU-Pro / 11369 / A closed system contains pure ammonia (NH_3) at an initial pressure and…

Problem

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

question

A closed system contains pure ammonia (NH_3) at an initial pressure and temperature of 1640psiaand 1460°R respectively. The ammonia then undergoes an isothermal expansion to a final pressure of 820psia. Using the generalized enthalpy correction chart calculate the change in specific enthalpy.

category

engineering

options

  1. 20.00 Btu/lbm
  2. 0.65 Btu/lbm
  3. 17.89 Btu/lbm
  4. 0.33 Btu/lbm
  5. 10.00 Btu/lbm
  6. 13.73 Btu/lbm
  7. 7.50 Btu/lbm
  8. -0.65 Btu/lbm
  9. 2.97 Btu/lbm
  10. 14.15 Btu/lbm

src

stemez-Thermodynamics

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Source and history

Official source

initial import