The change in entropy of 250 g of water heated slowly from 20 °C to 80 °C is:
Q: What is the change in entropy as 58.3 J flows from 331°C to 197°C?
A: Given: Q=58.3j T1=331 deg.c=604K T2=197 deg.c=470K Lets's find Change in entropy.
Q: When 100g of copper cools down from 100 °C to 20 °C, specific heat of copper is 385 J/kg °C , what…
A: Given: The mass of the copper is 100 g. The initial temperature is 100oC. The final temperature is…
Q: Two blocks, each containing 2.00 moles of silver (Cp = 25.35 Joules per kelvin per mole), are…
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Q: A Styrofoam cup holding 125 g of hot water at 100°C cools to room temperature, 20.0°C. What is the…
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Q: Water is slowly warmed from 17.0°C to 85.0°C. If the mass of the water is 320 g, what is the water's…
A: Solution: Given that: Mass of the water is: m=320g=0.32 kg Temperatures are:…
Q: 20 grams of ice initially at -15◦C is placed on top of 100 grams of 350◦C solid gold in a thermally…
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Q: A container with 41 g of a certain liquid (c = 4171 J/kg · °C, Lv=2224 kJ/kg) at 22 °C is heated up…
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Q: A Styrofoam cup holding 130 g of hot water at 97°C cools to room temperature, 23.0°C. What is the…
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Q: An ice tray contains 360 g of liquid water at 0°C. Calculate the change in entropy of the water as…
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Q: What is the engine's thermal efficiency?
A: The thermal efficiency of the engine is 28.8 %Explanation:
Q: Og of Water is heated from 0°C to 100 °C, and (c) 100 g of water is vaporized at 100 °C? Use the…
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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: A sophomore with nothing better to do adds heat to 0.350 kgof ice at 0.0 C until it is all melted.…
A: Ice is at a temperature 0°C. The expression for the change in entropy of object is, ∆s=-mLiceT…
Q: If I add 30J of heat to a system so that the final temperature of the system is 300K, what is the…
A: Entropy change = [Heat change in process÷ Temperature ] Heat change = 30J Temperature = 300K
Q: both ASA and ASB are positive both ASA and ASB are negative ASA is positive and ASB is negative ASA…
A: The solution for this question is given below...
Q: A litre of water at 20 degrees C is placed in a fridge at 5 degrees C. Calculate the change in…
A: When an object or a body loses heat, its temperature falls and the heat loss is mathematically…
Q: Exactly 500 grams of ice are melted at a temperature of 32°F. (Lice = 333 J/g.) What is the change…
A: Given: Here are the given data, Mass, m=500 g Temperature, T=32°F=273°K Lice=333 Jg To find: The…
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: You place 0.410 kg of cold water inside a freezer that has a constant temperature of 0 °C. The water…
A: We need to determine how the entropy of the water changes when it freezes. We are aware that the…
Q: A 68.7-g ice cube is initially at 0.0°C. (a) Find the change in entropy of the cube after it melts…
A: The given data are: m=68.7 g=0.0687 kgLf=3.33×105 J/kgT=0° C=273 K Here, m denotes the mass, T…
Q: Three kilograms of gas are heated from 200 deg.C to 500 deg.C at a constant pressure in a heat…
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Q: Two hundred joules of heat are removed from a heat reservoir at a temperature of 200 K. What is the…
A: Given data: The heat removed from a reservoir is: Q = 200 J The temperature at which heat is…
Q: 100 gm of water at 0 °C is mixed with an equal mass of water at 80 °C. Calculate the resultant…
A: Given: The mass of the water is 100 gm. The initial temperature is 0°C. The…
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: When 150g of copper cools down from 200 °C to 25 °C, specific heat of copper is 385J/kg°C , what is…
A: mass of copper sample = 150 g = 0.15 kg Initial temperature = 200oC final temperature = 25o C…
Q: The temperature at the surface of the Sun is approximately 5,100 K, and the temperature at the…
A: temperature of surface of sun(TS)=5100 K Temperature of surface of earth(TE)=291K Energy(Q)=4.50 X…
Q: If 100 J of heat is added to a system so that the final temperature of the system is 400 K, what is…
A: Given: 100J of heat added to the system Q = 100J change in temperature is…
Q: 50 g of water at 30 degrees Celcius is changed into vapor at 100 degrees Celcius. Find the change in…
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Q: On a cold day, 17400 J of heat leaks out of a house. The inside temperature is 24.0° C, and the…
A: Given Data: The amount of heat leaks is, Q=17400 J The inside temperature of the house is, Th=24°C…
Q: What change in entropy occurs when a 0.12 kg steam at 121 deg C is transformed into ice at -28 deg…
A: The mass of the steam: The initial temperature of the steam: The final temperature of the ice:…
Q: A gas expands adiabatically and reversibly. What is its change in entropy?
A: Entropy The entropy is the measure of the thermal energy present in the system per unit temperature…
Q: The entropy of a block of ice increases by 75 J/K as it warms from -33 degrees Celsius to 0 degrees…
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Q: Four moles of an ideal diatomic gas change its volume from 2 m3 to 4 m3. The initial temperature of…
A: Diatomic Gas No. of moles = n = 4 R = 8.314 J/K Specific heat at constant pressure = Cp = 7/2(n)R…
Q: A phase change, such as melting or freezing, occurs at a fixed temperature. What happens to the…
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Q: A 500-g chocolate bar starts to melt at 45OC. What is the change in entropy?
A: The change in entropy △S is related to temperature T by, △S=QT. Here, Q is the heat energy required…
Q: n 14 g ice cube at -15°C is put into a Thermos flask containing 130 cm³ of water at 17°C. By how…
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Q: xpands isothermally to four times its Calculate the change in entropy in terms of the gas constant.
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