Solve this multiple-choice question and choose the correct option.

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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.

Difficulty: Easy

0.287 J/kg·K
2.87 J/kg·K
28.7 J/kg·K
287 J/kg·K

Correct Answer: 287 J/kg·K

Explanation:

ConceptThe specific gas constant for air is R_air ≈ 287 J/(kg·K). (The universal gas constant is 8.314 kJ/(kmol·K) = 8314 J/(kmol·K).)

Final Answer287 J/kg·K

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