When an ideal gas (γ=5/3) is heated under constant pressure, what percentage of given heat energy will be utilized in doing external work?
Correct answer: A. 0.4
- A. 0.4
- B. 0.5
- C. 0.3
- D. 0.2
Explanation
The percentage of heat utilized is 40% or 0.4.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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