Question

A cylinder contains carbon dioxide. Carbon dioxide temperature
in the cylinder increases from 300 K to 700 K under constant
pressure of 240 kPa. Initial volume of carbon dioxide is 0.07
m^{3}. Determine the required heat in this process in unit
of kJ. Round the result to two decimal places.

Answer #1

Carbon dioxide (CO2) is compressed in a
piston–cylinder assembly from p1 = 0.7 bar,
T1 = 280 K to p2 = 14 bar.
The initial volume is 0.2 m3. The process is described
by pV1.25 = constant.
Assuming ideal gas behavior and neglecting kinetic and potential
energy effects, determine the work and heat transfer for the
process, each in kJ, using constant specific heats evaluated at 300
K, and data from Table A-23.

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A cylinder contains 0.200 mol of carbon dioxide (CO2) gas at a
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