riley6247

24.09.2019 • 

Chemistry

Consider a cylinder fitted with a frictionless piston that contains 3 kg of r-134a at 150o c and a pressure of 1020 +/- 20 kpa. the cylinder is now cooled at constant pressure until the volume of the r-134a in the cylinder is 0.04 m3 . the following parts include the six-step methodology and thus you do not need to include that separately. complete the following parts to find, (i) the temperature after cooling and (ii) the properties for each state necessary to determine the change in the internal energy between state 1 and 2.
a. write the general energy balance and list your assumptions to obtain the integrated form of the balance useful to obtain the change in internal energy, and the heat and work transferred.
b. show a schematic for the process and estimate the temperature of the r-134a after cooling.
c. write the properties for each state of the process that you need to determine the change in internal energy and the work associated with the cooling.
d. calculate the work during the process and indicate if it is "into" or "out of" the system for this process?
e. what is the heat transfer for this process?

Ответ:

faithyholcomb

23.02.2021

Chemistry

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Explanation:

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