Worksheet 20: Multiple Choice; Short Answer. (80 pts.) We learned a ...

6. This is a Carnot cycle. Suppose one builds a machine that performs this particularCarnot cycle. That machine would be(a) a refrigerator. [I.e., the environment does work on the system.](b) an engine. [The system does work on the environment.]7. What is the temperature at the beginning of the fourth step in the process? (What is thetemperature at the beginning of the isothermal compression step?)8. How much heat is put into/taken out of the system during the Carnot cycle?9. How much work is put into/taken out of the system during the Carnot cycle?10. What is the entropy change in step two of the cycle. (What is the entropy change in theisothermal expansion.)11. Which of the following is true. [Mark all that apply.](a) Δ Hstep 1+Δ Hstep 2+Δ Sstep 3+Δ Sstep 4= 0 .(b) Δ Hstep 1+Δ Sstep 2+Δ Hstep 3+Δ Sstep 4= 0 .(c) Δ Hstep 1+Δ Sstep 2+Δ Sstep 3+Δ Hstep 4= 0 .(d) Δ Sstep 1+Δ Hstep 2+Δ Hstep 3+Δ Sstep 4= 0 .(e) Δ Hstep 1+Δ Sstep 2+Δ Hstep 3+Δ Sstep 4= 0 .(f) Δ Sstep 1+Δ Sstep 2+Δ Hstep 3+Δ Hstep 4= 0 .