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A frictionless piston-cylinder device contains air at 300 K and 1 bar and is heated until...

A frictionless piston-cylinder device contains air at 300 K and 1 bar and is heated until its volume doubles and the temperature reaches 600 K. Answer the following:

A. You are interested in studying the air in the piston-cylinder device as a closed system. Draw a schematic of your device and the boundary that defines your system. Assume the cylinder is in horizontal position.

B. Determine the final pressure of the air at the end of the process, in bar. Hint: use the ideal gas law equation.

C. On a different occasion (different temperature and pressure), you find the piston cylinder device contains 0.5 kmol of H2O occupying a volume of 0.009 m3. Determine the weight of the H2O in N. Hint: Start with the relationship between number of moles, molecular mass and mass.

D. Determine the specific volume of the H2O (from Part C) in m3/kg.

engineering   Mechanical-Engineering   
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Answer #1

summary-

(B) final pressure(p2) =1 Bar.

(C) weight = 88.29 N.

(D) specific volume = .001 m3 /kg

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