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Suppose 0.270 mol of an ideal diatomic gas (γ=1.40) undergoes a Carnot cycle between 327C and...

Suppose 0.270 mol of an ideal diatomic gas (γ=1.40) undergoes a Carnot cycle between 327C and 127C, starting at pa =12.0x105 Pa at point a in the pV-diagram for the Carnot cycle. The volume doubles during the isothermal expansion step a to b.

(a) Find the pressure and volume at points a, b, c and d.

(b) Find Q, W and dU for each step and for the entire cycle.

(c) Find the efficiency directly from the results of part (b), and compare with the value calculated from e = 1 – TC /TH .

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