Gas constants: select the correct SI value for the specific gas constant of air Pick the correct numerical value (with units) commonly used for the gas constant of air in SI calculations. Choose the correct option.
Mechanical Engineering
Thermodynamics
Difficulty: Easy
Choose an option
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A0.287 J/kg·K
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B2.87 J/kg·K
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C28.7 J/kg·K
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D287 J/kg·K
Answer
Correct Answer: 287 J/kg·K
Explanation
ConceptThe specific gas constant for air is Rair ≈ 287 J/(kg·K). (The universal gas constant is 8.314 kJ/(kmol·K) = 8314 J/(kmol·K).)
Final Answer287 J/kg·K