Engineering Board Exam Reviewer · Thermodynamics · medium

What is the specific gas constant of a gas with a molecular weight of 28 kg/kmol (e.g., nitrogen)?

  1. 0.2969 kJ/kg· K
  2. 232.8 kJ/kg· K
  3. 3.3678 kJ/kg· K
  4. 0.2870 kJ/kg· K

Answer

A. 0.2969 kJ/kg· K

Solution

R = R/M = 8.314/28 = 0.2969 kJ/kg· K.

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