Exam-style question
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What is the work done by a gas during expansion against a constant external pressure?.
- A.W = PΔV
- B.W = ΔV/P
- C.W = P/V
- D.W = ΔP/V
Model answer
What a good answer should say
- W = PΔV
Explanation
Why this works
The work done by a gas during expansion against a constant external pressure is given by the formula W = PΔV, where P is the pressure and ΔV is the change in volume. This relationship is fundamental in calculating work in thermodynamic processes.
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