P (Pa) 4 6,000+ 4,000 2,000- 3 (A) -80 J (B) -40 J (C) 40 J (D) 80 J (E) 180 J 2 0 0 0.01 0.02 0.03 V (m³) 28. A sample of nitrogen gas undergoes the cyclic thermodynamic process shown above. Which of the following gives the net heat transferred to the system in one complete cycle 1-2-3-1?
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- 800 J of work are done BY a system in a process that decreases the thermal energy of the system by 50 J. How much heat is transferred TO the system during this process? If the system gains heat, answer with a positive number. If the system loses heat, answer with a negative number. (in J) -750 750 -850 -50 027) Which of the following must be true for a thermodynamic process that starts and ends at the same state? A: The total heat and work for the cycle must both be zero B: The total work equals the heat C: The value of all state functions must be different at the beginning and the end of the process D: The change in internal energy over the whole cycle must equal 0 E: The temperature of the system will be constant throughout the processThe density of ice and water are 917 kg/m³ and 1000 kg/m³. The latent heat for the transition between ice and water is 334 kJ/kg. Calculate the slope of the tangent of the coexistence curve of ice and water at T = 213 K. Select one: dP dT a. b. C. O d. dP dT dP dT dP dT = - -170 atm/K = — - - 181 atm/K -203 Pa/K -183 Pa/K
- 3 The First Law a f i b V When a system is taken from state i to state f along the path iaf, the heat added to the system is Q = 50 cal and the work done by the system is W = 20 cal. Along the path ibf, Q = 36 cal. (a) What is W along the path ib f? (b) If W = -13 cal for the curved return path fi, what is Q for this path? (c) If E = 10 cal, what is E,? (d) If E, = 22 cal, what is Q for the process ib? %3D (e) If E, = 22 cal, what is Q for the process bf?Consider the following diagram. p (atm) 4.0 3.0 2.0 t 1.0 R 1.0 S (a) What is the change in internal energy (in J) for the process represented by the closed path shown above? 0 J (b) How much heat is exchanged (in J)? 318.2433 X J Additional Materials Reading 2.0 3.0 4.0 5.0 (c) If the path is traversed in the opposite direction, how much heat is exchanged (in J)? -318.2433 X J V (L)10-