(a) Carbon-dioxide expands isentropically through a nozzle from a pressure of 3.2 bar to 1.0 bar. If the initial temperature is $475^{\circ} \mathrm{K}$ determine the final temperature, the enthalpy drop and the change in internal energy.
Explanation
The isentropic expansion of carbon dioxide through a nozzle involves a decrease in temperature and enthalpy. The change in internal energy is related to the change in temperature and specific heat capacity.
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