An ideal gas expands isothermally from 3 L to 8 L against a constant 2 atm. Heat absorbed?
A16 L atm
B6 L atm
C22 L atm
D10 L atm
Answer & Solution
Correct answer: D. 10 L atm
Since ∆U = 0, q = -w = pex(Vf - Vi) = 2 atm x 5 L = 10 L atm.
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