One mole of ideal gas with γ = 1.4 cools by 20 K in adiabatic expansion. With R = 8.3 J mol^-1 K^-1, the work done is
A249 J
B415 J
C664 J
D166 J
Answer & Solution
Correct answer: B. 415 J
W = µR(T1 - T2)/(γ - 1) = 1 x 8.3 x 20 / 0.4 = 415 J.
Related questions
Stirring a liquid in contact with a reservoir cannot be exactly reversed because that woulIn the Carnot cycle, the heat absorbed during isothermal expansion equals which quantity?In the isothermal compression of a Carnot cycle, heat is?A Carnot cycle is made of which combination of steps?An engine absorbs 600 J per cycle and has an efficiency of 0.25. How much work does it do A Carnot engine works between 500 K and 300 K. What fraction of the absorbed heat becomes A Carnot engine takes heat from a 800 K source and rejects it at 400 K. What is its efficiIrreversibility comes from non-equilibrium states and which other cause?