Thermodynamics – Carnot cycle

1. The problem statement, all variables and given/known data
An ideal gas is taken through a Carnot cycle. The
isothermal expansion occurs at 250°C, and the isothermal
compression takes place at 50.0°C. The gas takes in 1 200 J
of energy from the hot reservoir during the isothermal
expansion. Find (a) the energy expelled to the cold reservoir
in each cycle and (b) the net work done by the gas in
each cycle.

2. Relevant equations

3. The attempt at a solution

Qh=1200J.

Qh-W=Qc (absolute values)

e(Carnot)=1-(523/323)= 61.9 %

Therefore Qc= .381(1200J)=457J

and W = 1200-457=743J

Not the correct answer. Qc = 741 according to the solutions manual.

ps. Latex seems to be bugged, didn’t work in "preview post" mode.

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