A stream of ethane gas at $493 15 mathrm{K}left220^{circ} mathrm{C}right$ and 30 bar expands isentro

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A stream of ethane gas at $493.15 \mathrm{K}\left(220^{\circ} \mathrm{C}\right)$ and 30 bar expands isentropically in a turbine to 2.6 bar. Determine the temperature of the expanded gas and the work produced if the properties of ethane are calculated by: (a) Equations for an ideal gas; (b) Appropriate generalized correlations.
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