Engineering Board Exam Reviewer · Thermodynamics · medium

A gas has a specific gas constant of 0.2598 kJ/kg· K. What is its molecular weight?

  1. 32 kg/kmol
  2. 28 kg/kmol
  3. 44 kg/kmol
  4. 2 kg/kmol

Answer

A. 32 kg/kmol

Solution

M = R/R = 8.314/0.2598 32 kg/kmol (oxygen).

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