When an aluminum bar is connected between a hot reservoir at 725 K and a cold reservoir at 310 K, 2.50 kJ of energy is transferred by heat from the hot reservoir to the cold reservoir. In this irreversible process, calculate the change in entropy of (a) the hot reservoir, (b) the cold reservoir, and (c) the Universe, neglecting any change in entropy of the aluminum rod.

Q: This is a symbolic version of Problem 52. When a metal bar is temporarily connected between a hot…

A: When there is change in heat Q at a constant absolute temperature T, the entropy changes as,

Q: 7-32 A 0.5-m³ rigid tank contains refrigerant-134a initially at 200 kPa and 40 percent quality. Heat…

A: Thus the entropy change in refrigerant is 3.875kJ/kg⋅K

Q: When an aluminum bar is connected between a hot reservoir at 620 K and a cold reservoir at 358 K,…

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Q: A 70.0-kg log falls from a height of 25.0 m into a lake. If the log, the lake, and the air are all…

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Q: Suppose we place 43 g of ice at 273 K in contact with a heat reservoir at 301K. Heat energy…

A: Given: The amount of ice is 43 g.            The temperature of the ice is 273 K.            The…

Q: When an aluminum bar is temporarily connected between a hot reservoir at 630 K and a cold reservoir…

A: Given that: Heat transferred dQ = 2.60kJ  =2600J The temperature of the hot reservoir  Th= 630 K The…

Q: A heat source generates heat at a rate of 55.0 W (1 W=1 J/s)55.0 W (1 W=1 J/s). How much entropy…

A: Given;-  A heat source generates heat at a rate of  P = 55 W = 55 J/sec  The surrounding temperature…

Q: A 66.0-kg log falls from a height of 20.0 m into a lake. If the log, the lake, and the air are all…

A: Given data The mass of the log is given as m = 66 kg. The height is given as h = 20 m. The…

Q: We have n moles of an ideal gas that expands reversibly through an isothermal process, when doubling…

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Q: A real (non-Carnot) heat engine, operating between heat reservoirs at temperatures of 510 K and 270…

A: Given-  T1 = 510 K T2 = 270 K W = 2.4 kJ Q= 37.6 kJ Part(a) The thermal efficiency of a real heat…

Q: A real heat engine works between two heat sources. The heat absorbed by the machine from the hot…

A: Given: The heat absorbed by the machine from the heat source is, Qh = 7000 J. The temperature of…

Q: When an aluminum bar is connected between a hot reservoir at 800 K and a cold reservoir at 288 K,…

A: Given that,The temperature of hot reservoir, TH=800 KTemperature of cold reservoir,Tc=288KHeat…

Q: An insulated Thermos contains 135 g of water at 86.7 °C. You put in a 13.9 g ice cube at 0.00 °C…

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Q: An insulated piston-cylinder device contain 8L of saturated liquid water at a constant pressure of…

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Q: Junyoung and Enkhtur are experimenting with an ideal gas. in their experiment, a 573-g quantity of…

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Q: There is a 300-g covered aluminum cup at 25°F being filled with 190-g of water at 90°C. Equilibrium…

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Q: What is the change in entropy of 10 moles of ideal diatomic gas that reversibly undergoes the…

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Q: If the entropy of state X of a system is higher than the entropy of state V of the system, what can…

A: As we know that there is always increase in the entropy of the universe.  As the Entropy of state X…

Q: A 5 kg block of ice initially at 268.15 K is placed in thermal contact with a very large reservoir…

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Q: Two constant-temperature reservoirs are kept in thermal contact with a 1.00 kg aluminum bar. One…

A: This problem can be solved using the formula for change in entropy.

Q: The surface of the Sun is approximately at = 700 K, and the temperature of the Earth’s surface is…

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Q: A 3.0-kgkg piece of aluminum at 29.2 ∘C∘C is placed in 1.0 kgkg of water in a Styrofoam container at…

A: Write the given values of this problem. ma=3 kgTi,aluminium=29.2°Cmw=1 kgTi,water=20°C

Q: A) 20 J of heat is transferred from a hotter reservoir to a colder reservoir. Calculate ΔStot (J…

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Q: Heat flows from a steel object of mass 4.00 kg whose temperature is 400 K to an identical object at…

A: Here, the given objects are identical, the common temperature of the objects at equilibrium is (400…

Q: One container holds 0.10 kg of water at 80 C and is warmed to 100 C by heating from contact with the…

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Q: When an aluminum bar is connected between a hot reservoir at 800 K and a cold reservoir at 288 K,…

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Q: Suppose that there are two very large reservoirs of water, one at a temperature of 85.0 °C and one…

A: Temperature of first reservoir (T) = 85oC temperature of second reservoir (T') = 19oC Heat…

Q: (a) In reaching equilibrium, how much heat transfer occurs from 1.2 kg of water at 40°C when it is…

A: Entropy increases in a closed system, such as the universe. But in parts of the universe, for…

Q: A 2.00-L container has a center partition that divides it into two equal parts as shown below. The…

A: Given   n1 = numbers of hydrogen gas moles  n2 = no of oxygen gas moles  n1 = 0.067  n2 = 0.067

Q: Ice cubes at 0 C are poured into a glass that initially contains 150 g of liquid water at 20 C. The…

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Q: A boulder with a mass of 75.0 kg, starting from rest, falls a distance of 20.0 m into a shallow…

A: Mass M = 75.0 kg Temperature T = 301 k Distance h= 20.0 m

Q: In a mechanical power cycle, the air contained in a piston-cylinder occupies 0.004 m3 and undergoes…

A: Concept used: There is no heat loss or heat gain during an adiabatic process.

Q: Junyoung and Enkhtur are experimenting with an ideal gas. in their experime 579-g quantity of the…

A: Given: The mass of the gas is 579 g.             The temperature is 326 K.             The molecular…

Q: A glass of 450.0 g water at 20°C is chilled using a 20.0 g icecube at 0°C. Assume that the mixing…

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Q: A 1.20 mol of an ideal gas at 350 K undergoes a free adiabatic expansion from V1 = 12.3 L to V2 =…

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Q: When an aluminum bar is connected between a hot reservoir at 630 K and a cold reservoir at 298 K,…

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Q: When an aluminum bar is connected between a hot reservoir at 800 K and a cold reservoir at 288 K,…

A: Given data,The temperature of hot reservoir, TH=800 KTemperature of cold reservoir,Tc=288KHeat…

Q: When a metal bar is temporarily connected between a hot reservoir at Th and a cold reservoir at Tc,…

A: Solution:-Given thatHot reservoir-ThCold reservoir-TcEnergy transfer from hot reservoir to cold…

Q: 150 g liquid water at 80.0°C is placed in an insulated flask. A 12.0 g ice cube at 0°C is added to…

A: Given values: Mass of the water, mw=150 gTemperature of the water, Tw=80°C=353 KMass of ice, mi=12…

Q: At the Olympic games, a 73.2 kg diver performs an inward straight dive in which she stands on the…

A: