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2. Imagine that we have two large copper blocks, A and B, which...
Two copper blocks, each of mass 1.25 kg, one at 54°C and the other at 0eC,...
Two copper blocks, each of mass 1.25 kg, one at 54°C and the other at 0eC, are placed in contact in an isolated container (so no heat can escape) and allowed to come to equilibrium. Calculate the final temperature of the two blocks (in K), the entropy change of each (in נ-K 1), and AStot (in נ-K 1). The specific heat capacity of copper is 0.3853-K 1-g 1 and may be assumed constant over the temperature range involved final temperature...
Problem 2: (10 pts) A 30-kg iron block at initial temperature 200°C and a 40-kg copper...
Problem 2: (10 pts) A 30-kg iron block at initial temperature 200°C and a 40-kg copper block at initial temperature 100°C are dropped into a very large lake at 20°C. Thermal equilibrium is established after a while as a result of heat transfer between the blocks and lake water. Both blocks have constant specific heats, i.e. Ciron = 0.45 kJ/kg. K and Ccopper = 0.386 kJ/kg. K. Hint: The very large lake can be treated as a heat reservoir and...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system ...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system is isolated from the rest of the universe. Initially, a hotter block is at a temperature TH and a colder block is at a temperature Tc. In the final state of the system, the two blocks are at the same intermediate temperature T. Compare the following quantities for the matal state and final state: Entropy for the block that starts at TH Sf> Si...
6: A 50 kg copper block initially at 80 C is dropped into a lake at...
6: A 50 kg copper block initially at 80 C is dropped into a lake at 15 C. Thermal equilibrium is established after a while as a resul the lake water. The specific heat copper at roorm temperature is c,-0.386 kJ/kg°C. Assuming the surroundings to be at 20 c t of heat transfer between the b lock and a. Determine the internal energy change and the entropy change of the copper. b. Determine the total entropy change for this process....
O Ask Your Teacher My Notes O 3/6 polnts | Previous Answers ColFunPhys1 14.P028. C and...
O Ask Your Teacher My Notes O 3/6 polnts | Previous Answers ColFunPhys1 14.P028. C and ty 27 C. The blocks are placed in contact with each other and come to Two copper blocks, each of mass 1.98 kg, initially have different temperatures,t, 21 thermal equilibrium. No heat is lost to the surroundings. (a) Find the final temperature of the blocks. 24 Find the heat transferred between them. 4574 (b) Find the entropy change of each block during the time...
2. Consider a process in which two tanks A and B are connected by a valve....
2. Consider a process in which two tanks A and B are connected by a valve. Tank A, which is insulated, has a volume of 600 liters and contains steam at 1.4 MPa, 300°C. Tank B, which is uninsulated, has a volume of 300 liters and contains steam at 200 kPa, 200°C. The valve connecting the two tanks is now opened and steam flows from A to B until the temperature in A reaches 250°C, at which time the valve...
6. The formula dS = dQ/T makes it look like a system can only increase its...
6. The formula dS = dQ/T makes it look like a system can only increase its entropy by absorbing heat. You must however remember that this equation is only true for reversible processes. Entropy can change for a system without absorbing any heat. Consider the following scenario. You are given an insulated container with two compartments. The whole container is at the temperature T which remains constant. One compartment has a volume V1 and has n1 moles of an ideal...
Hot water is often carried by copper pipes in residential homes. Say that we have water...
Hot water is often carried by copper pipes in residential homes. Say that we have water flowing from a hot water tank to the shower, and that when the water enters the (pure copper, k = 386 W/m-C) copper pipe (ID = 3/4”, OD = 7/8”), it has Tin = 108 F = 42.2 C. The ambient air temperature is Tout = 19 C. The inner heat transfer coefficient hin = 150 W/m2-C, while hout = 13 W/m2-C. We can...
PLEASE HELP ASAP!! 1 . (a) Find the change in entropy when 2 kg of Oxygen...
PLEASE HELP ASAP!!
1 . (a) Find the change in entropy when 2 kg of Oxygen at 60°C are mixed with 6 kg of Nitrogen at 40°C in a rigid vessel. The initial pressure of each component is 103 kPa and remains the same for that of the mixture. (b) What is the amount of heat transferred during the mixing process? I Given, Cv = 0.743 J/g. °K for Nitrogen and Cv = 0.659 J/g.ºk for Oxygen.
Help on these would be great! 111) Th of 1 mol of A to B absorbs...
Help on these would be great!
111) Th of 1 mol of A to B absorbs 15 kcal of heat from the surroundings when it occurs irreversibly. doing no work. At the same T and P, reversible conversion of 1 mol of B to A does 10 kcal of for work done on system, heat absorbed by system.) a) i) For A → B, determine qirrev and wirrev ermodynamics of a Cyclic Process: At 293 K and 1 atm pressure,...
Two copper blocks, each of mass 1.25 kg, one at 54°C and the other at 0eC, are placed in contact in an isolated container (so no heat can escape) and allowed to come to equilibrium. Calculate the final temperature of the two blocks (in K), the entropy change of each (in נ-K 1), and AStot (in נ-K 1). The specific heat capacity of copper is 0.3853-K 1-g 1 and may be assumed constant over the temperature range involved final temperature...
Problem 2: (10 pts) A 30-kg iron block at initial temperature 200°C and a 40-kg copper block at initial temperature 100°C are dropped into a very large lake at 20°C. Thermal equilibrium is established after a while as a result of heat transfer between the blocks and lake water. Both blocks have constant specific heats, i.e. Ciron = 0.45 kJ/kg. K and Ccopper = 0.386 kJ/kg. K. Hint: The very large lake can be treated as a heat reservoir and...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system is isolated from the rest of the universe. Initially, a hotter block is at a temperature TH and a colder block is at a temperature Tc. In the final state of the system, the two blocks are at the same intermediate temperature T. Compare the following quantities for the matal state and final state: Entropy for the block that starts at TH Sf> Si...
6: A 50 kg copper block initially at 80 C is dropped into a lake at 15 C. Thermal equilibrium is established after a while as a resul the lake water. The specific heat copper at roorm temperature is c,-0.386 kJ/kg°C. Assuming the surroundings to be at 20 c t of heat transfer between the b lock and a. Determine the internal energy change and the entropy change of the copper. b. Determine the total entropy change for this process....
O Ask Your Teacher My Notes O 3/6 polnts | Previous Answers ColFunPhys1 14.P028. C and ty 27 C. The blocks are placed in contact with each other and come to Two copper blocks, each of mass 1.98 kg, initially have different temperatures,t, 21 thermal equilibrium. No heat is lost to the surroundings. (a) Find the final temperature of the blocks. 24 Find the heat transferred between them. 4574 (b) Find the entropy change of each block during the time...
2. Consider a process in which two tanks A and B are connected by a valve. Tank A, which is insulated, has a volume of 600 liters and contains steam at 1.4 MPa, 300°C. Tank B, which is uninsulated, has a volume of 300 liters and contains steam at 200 kPa, 200°C. The valve connecting the two tanks is now opened and steam flows from A to B until the temperature in A reaches 250°C, at which time the valve...
PLEASE HELP ASAP!!
1 . (a) Find the change in entropy when 2 kg of Oxygen at 60°C are mixed with 6 kg of Nitrogen at 40°C in a rigid vessel. The initial pressure of each component is 103 kPa and remains the same for that of the mixture. (b) What is the amount of heat transferred during the mixing process? I Given, Cv = 0.743 J/g. °K for Nitrogen and Cv = 0.659 J/g.ºk for Oxygen.
Help on these would be great!
111) Th of 1 mol of A to B absorbs 15 kcal of heat from the surroundings when it occurs irreversibly. doing no work. At the same T and P, reversible conversion of 1 mol of B to A does 10 kcal of for work done on system, heat absorbed by system.) a) i) For A → B, determine qirrev and wirrev ermodynamics of a Cyclic Process: At 293 K and 1 atm pressure,...
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