4. If 80J of heat flow from a 40°C block into a 20°C block, what is the change in entropy of both blocks? What is the total change in entropy of both blocks combined?
Q: 13. If a 0.06247 kg ice cube initially at 0.00° C is allowed to melt in a Styrofoam cup holding…
A: mass of ice (m) = 0.06247 kg initial temperature of ice = 0oC mass of water (m') = 0.497 kg Initial…
Q: The temperature at the surface of the Sun is approximately 5,600 K, and the temperature at the…
A: Solution: Given data, Sun temperature=5600 K Earth temperature=293 K Energy=5000 J
Q: A 1 kg block of ice initially at -10 °˚C is placed in thermal contact with a very large reservoir at…
A:
Q: 15 A mixture of 1773 g of water and 227 g of ice is in an initial equilibrium state at 0.000°C. The…
A:
Q: A 700.0 g block ice at -20 °C is brought into thermal contact with 10.0 g of water at 0 °C in an…
A: Since the system is adiabatic (no heat exchange with the surroundings) and at constant pressure, the…
Q: 8. Suppose the 1,000 kJ is needed to raise the 12 kg of now gaseous nitrogen N, from boiling…
A: Given: E=1000 kJ Ti=-196+273= 77 K Tf=20+273=293 K
Q: A large block of copper initially at 23.0°C is placed in a vat of hot water (83.3°C). The first 1.40…
A:
Q: Prove that the "cycle" consisting of only two adiabatic steps (reversible expansion and then…
A: To prove that the "cycle" consisting of only two adiabatic steps (reversible expansion and then…
Q: QUESTION 12 80 g of ice at 0.00°c absorbs just enough heat to completely melt. What is the change in…
A: Mass of the ice (m)= 80 g Temperature (T)= 0 ° C = 273 K Latent heat of fusion (Lf)= 334 J/g Let ∆ S…
Q: In every cycle of its operation, a Carnot engine takes in 640 J of heat from a reservoir at 380 K…
A: Given, heat taken from reservoir, Q = 640 J temperature of reservoir, TH = 380 K TC = 300 K
Q: 80 g of ice at 0.000C absorbs just enough heat to completely melt. What is the change in entropy of…
A: Given: The mass of the ice, m=80 g The latent heat of fusion of ice is, Lf=334 J/g. Require:…
Q: Which of the following statements about an ac process is untrue? The change in entrony is zero
A: Given Data : Adiabatic process
Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…
A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…
Q: 45-g of water at 14°C is heated until it becomes vapor at 100°C. Calculate the change in entropy of…
A: Given, Mass=45g Initial Temperature=14degree Final temparature=100degree
Q: 8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained…
A: solution- assumptions- 1. This is a steady flow process. 2. Air is an ideal gas. 3. Potential energy…
Q: An 8.0 g ice cube at -10°C is put into a Thermos flask containing 100 cm³ of water at 20°C. (a) What…
A: Given:The mass of the ice cube is, .The temperature of ice cube is, .The volume of water in thermos…
Q: Which of the following processes does not involve a change in entropy?A. An electric heater raises…
A: Entropy change is the measure of change in thermal energy per unit temperature of the system.
Q: a heat of fusion of 80 cal/g and a heat of vaporization of 540 cal/g. What is the entropy change in…
A: Given data - amount of water (m)= 30 g latent heat of fusion (l) =…
Q: A sophomore with nothing better to do adds heat to 0.500 kgkg of ice at 0 ∘C∘C until it is all…
A:
Q: 9. Is the entropy of a bag of popcorn greater than, less than, or equal to the entropy of the…
A: The entropy of a bag of popcorn must be compared to the entropy of the corn kernels just prior to…
Q: A 4.50-kg block of ice at 0.00℃ falls into the ocean and melts. The average temperature of the ocean…
A:
Q: power radiated
A: The statement that (a) no heat engine can be more efficient than a Carnot engine working between the…
Q: #2. Suppose 2.35 moles of an ideal gas expands to twice its volume isothermally at 298 A) How much…
A:
Step by step
Solved in 3 steps
- 9:EAI OEO"llzain IQ نقطنان )2( Initially 5 mol of an ideal gas, with CV,m = 12.5 J K-1 mol-1, are at a volume of 5 dm3 and a temperature of 300 K. If the gas is heated to 373 K and the volume changed to 10 dm3, what is the entropy change 42.4 J.mol-1.K-1 24.4 J.K-1 O 24.4 J.mol-1.K-1 42.4 J.K-1 (O öslg äbäi Predict which of the following substances has the highest entropy value at 25°C Mgo (s) O Снзон (1) со (д) CaCO3 H20 (I)A heat engine that operates between two heat reservoirs at 900 ° C and 0 ° C, respectively, it has an efficiency of 35% and receives 21 kJ. If the tank temperature low is the environment, determine its entropy variation. a) -50 J / K b) 296.7 J / K c) 50 J / K d) ∞The principle of increasing entropy Entropy principle: "For all irreversible processes, the change in entropy of the universe is positive." To prove the principle can be taken the case of reversible adibatic process. AS = Sf - Si Prove that the entropy of the universe is positive: E4S 2 0
- Which statement regarding entropy is false? A child builds a tower from a pile of blocks. The entropy of the blocks increases. A layer of salt then a layer of pepper are placed in a jar then shaken. The entropy of the salt and pepper increases. Gasoline is burned in a car engine to form exhaust. The entropy of the gasoline increases. A candle burns to heat the surrounding air. The entropy of the candle and surrounding air increases.What is the decrease in entropy (in J/K) of 27.5 g of water that condenses on a bathroom mirror at a temperature of 32.0°C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg? J/KH4
- 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/K53. What is the decrease in entropy of 25.0 g of water that condenses on a bathroom mirror at a temperature of 35.0° C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg?