Q2. What is the total change in entropy when 5.0 kg Of water at 15'C is brought into contact with a large heat reservoir at 1000C, after the water reached the temperature of the reservoir -4186 J/kg,K
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- 1. When the pins fall away, the gas is compressed by a constant external pressure to 5 atm. Calculate AS and find the maximum work that could have been extracted from the same change in state had the process been carried out reversibly. The system is in contact with the surroundings at 250K. TE250k O.5 moler ielealget at latm -Perti Satm#2. Suppose 2.35 moles of an ideal gas expands to twice its volume isothermally at 298 K. A) How much work is done by the gas? B) Show the work done on a pressure-volume (P-V) graph C) What is the change in entropy of the gas?16
- Volech 28. A monatomic ideal gas initially at pressure Po = 10° Pa, volume Vo = 0.01 m³, and temperature To = 300 K is taken through the cycle shown in the figure. p %3D ЗР. a. Determine the change in internal energy from point A to point B. b. Determine the work done by the gas from point B to point C. Po c. Determine the heat released by the gas from point C to point D. d. Determine the net work done by the gas and the net heat absorbed by the gas. Vo 3V bhe s on theQ25 Which has the higher entropy, a deck of cards in which the cards are organized by suit or a shuffled deck of cards? Explain.5. For a system, the thermodynamic as)vn energy U is defined as a function of S, V, and n which is U(S,V,n) = kn3V 3e3nR %3D where S is the entropy, V is the volume, n is the number of moles, K is the constant, and R is the gas constant. Determine a. Based on the theory in Thermodynamics, (), T = Determine, b. Based on the theory in Thermodynamics, Pressure P = . S,n 5/8 Determine c. Determine ne d. Determine dU in dS, dV and dn
- QUESTION 17 A hot reservoir at 170°C transfers 400 kJ of heat to a cold resevoir at 50º C. What is the total change in entropy? a. 0.000 J/K b. 1,210 J/K C. 5,560 J/K d. 130 J/K e. 335 J/K2 What is the thermal efficiency for the heat engine illustrated on the pV diagram below? The gas is monatomic p(Pa) 10 V(m³) 7 3If I bring a small object at temperature 200C in thermal contact with a large object at the same temperature, a) thermal energy will flow from the large to the small object because the large object has more internal energy. b) thermal energy will flow from the small to the large object because that will increase entropy. c) thermal energy will not flow.