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MMLU-Pro / 11290 / An air-vapor mixture, initially at 60°F and 55 percent relative humidity, is…

Problem

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

question

An air-vapor mixture, initially at 60°F and 55 percent relative humidity, is heated until its temperature reaches 85°F. Determine (a) the initial and final specifichumidities, (b) the final relative humidity, and (c) the amount of heat added perlbmof dry air. Assume the mixture to be at a pressure of 14.7psia.

category

engineering

options

  1. Initial and final specific humidities: 0.00802lbm vapor/lbm dry air, Final relative humidity: 22.64 percent, Heat added: 5.1 Btu/lbm of dry air
  2. Initial and final specific humidities: 0.00602lbm vapor/lbm dry air, Final relative humidity: 23.64 percent, Heat added: 6.1 Btu/lbm of dry air
  3. Initial specific humidity: 0.00602lbm vapor/lbm dry air, Final specific humidity: 0.00502lbm vapor/lbm dry air, Final relative humidity: 26.50 percent, Heat added: 6.5 Btu/lbm of dry air
  4. Initial specific humidity: 0.00752lbm vapor/lbm dry air, Final specific humidity: 0.00702lbm vapor/lbm dry air, Final relative humidity: 27.50 percent, Heat added: 7.4 Btu/lbm of dry air
  5. Initial specific humidity: 0.00802lbm vapor/lbm dry air, Final specific humidity: 0.00902lbm vapor/lbm dry air, Final relative humidity: 21.64 percent, Heat added: 8.1 Btu/lbm of dry air
  6. Initial specific humidity: 0.00702lbm vapor/lbm dry air, Final specific humidity: 0.00852lbm vapor/lbm dry air, Final relative humidity: 20.64 percent, Heat added: 7.8 Btu/lbm of dry air
  7. Initial and final specific humidities: 0.00652lbm vapor/lbm dry air, Final relative humidity: 25.14 percent, Heat added: 6.0 Btu/lbm of dry air
  8. Initial and final specific humidities: 0.00702lbm vapor/lbm dry air, Final relative humidity: 24.64 percent, Heat added: 7.1 Btu/lbm of dry air
  9. Initial and final specific humidities: 0.00652lbm vapor/lbm dry air, Final relative humidity: 23.14 percent, Heat added: 6.6 Btu/lbm of dry air
  10. Initial specific humidity: 0.00502lbm vapor/lbm dry air, Final specific humidity: 0.00602lbm vapor/lbm dry air, Final relative humidity: 28.64 percent, Heat added: 5.5 Btu/lbm of dry air

src

stemez-Thermodynamics

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Source and history

upstream_id / Original problem ID
11290
task_id
fbe0ab92-a068-51b6-9f61-473c2b1f54c2
task_key
default--test--11290
task_revision_id
1
config / split
default / test

Official source

initial import