Calculate the change in entropy of the universe if 0.3 kg of water at 70°C is mixed with 0.2 kg of water at 15°C in a thermally insulated container. The specific heat of water is 4186 J/kg•K.
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Q: Suppose we put a small ice cube in a bucket containing 70 kg of water at 38 °C. As the ice melts, it…
A: heat transfer equation gives dH=mcdT ∆H=mc∆T where m is the mass of water=70kg c is the specific…
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A: Given data: Pressure of state 1 P1=2×105 N/m2. Volume of state 1 V1=20 liters. Pressure of state 2…
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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
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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…
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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…
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Q: A puddle containing 1.10 kg of water at 0°C freezes on a cold night, becoming ice at 0°C. What was…
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A: Given value--- change in entropy = 1.62 J/K. temperature = 220 K. We need to find --- how much…
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Q: A freezer is used to freeze 5.0 L of water completely into ice. The water and the freezer remain at…
A: The energy transferred from the water by heat can be obtained as Q=mwaterLf=ρVLf Substituting the…
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Q: (a)On a winter day, a certain house loses 5.33 10 ✕ 8J of heat to the outside. What is the total…
A: Heat loss from house = 5.33×108 jule Outdoor temp (T2) = 5.05°C =278.05k IIndoor temp (T1) = 24°C =…
Q: An 8.0 g ice cube at -10˚C is put into a Thermos flask containing 110 cm3 of water at 15˚C. By how…
A: Given that:Volume of water, Vw=110 cm3Mass of water, mw=110 cm3 × 1 g/ cm3=110g= 0.11 kgMass of ice,…
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…
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Q: A system consists of a 1.2 kg block of copper at 20∘C and 1.5 kg block of copper at 200 ∘C. The two…
A: We have givenm1=1.2 kgT1=20°C=20+273=293 Kandm2=1.5 kgT2=200+273=473 kspecific heat for copper=385…
Q: Consider 4.00 mol of an ideal gas with a constant‑volume molar specific heat of 12.5 J/(mol·K), an…
A: Entropy is the measure of the degree of randomness of a system. It is an extensive property that…
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