A piston-cylinder device initially contains 100 moles of an ideal gas at T = 353.15 K and P = 0.1 MPa. The ideal gas has CP* = (7/2)R. The ideal gas is compressed isothermally until its volume is half its initial volume. How much work was done on the gas?
A. No work was done because the temperature stayed constant throughout.
B. 461. kJ
C. -203. kJ
D. 203. kJ
E. Insufficient information to solve
A. Incorrect. The decrease in volume must increase pressure. Increasing system pressure—even a system composed of an ideal gas—requires energy added to the system.
B. Incorrect. You forgot to convert to absolute temperature.
C. Incorrect. The system is being compressed, so energy is being given (+) to the system. Check your natural log function.
D. Correct. This problem closely parallels Example 3-10.
E. Incorrect. Enough information is provided to solve the problem.
You might also like to view...
In a central processing unit (CPU), what does a physical switch or a software switch prevent?
What will be an ideal response?
The ____________________ period is the time during which the animal is pregnant
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT found in medium and heavy duty truck diesel engines?
A. cast iron solid lifters B. middle alloy steel solid lifters C. roller type cam followers D. hydraulic lifters
The federal Clean Water Act of 1972 outlines the number of various animals that define a Confined
Animal Feeding Operation. According to this standard, is an operation with 800 cattle a CAFO?
Indicate by YES (Y) or NO (N).