Problem 16 kg of water at 35°C is added to a large quantity of ice at 0°C resulting in ice-water. What is the total change in entropy in this process? This is the same situation is in Problem 1 of Quiz 12, but here you are asked for the change in entropy.
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- A 4.0-kg piece of aluminum at 29.4 °C is placed in 1.0 kg of water in a Styrofoam container at room temperature (20.0 °C). Part A Estimate the net change in entropy of the system. Express your answer to two significant figures and include the appropriate units. AS = μA Value Units ?Problem 5 Consider a substance that has a melting temperature of T= 159 K at p=1 atm and a melting enthalpy of AHm = 4900 J/mol. Determine the entropy of melting the substance.The thermodynamic cycle of a heat engine using ideal helium gas is shown in the P-V diagram. The ratio of heat capacities y (also called ratio of specific heats) is the ratio of the heat capacity at constant pressure Cp to the heat capacity at constant volume Cy. For ideal helium gas, y = 1.67. Select the stage that is paired correctly with the process it represents in the P-V diagram. 1-2: adiabatic process O2-3: isochoric process 3-4: isothermal process 4-1: isobaric process p (kPa) 0.8 0.6- 0.4- 0.2 0.0 2 0.2 0.4 0.6 1 0.8 V(m³) 1.0
- Can you please answer the follwing question, I did the right work but it seems that is not the right answer.Example: Suppose a 0.5 kg of water at 15 °C is heated to 20 °C. What is the change in entropy of the water. Note: Specific heat of Water is 4186 J/kgKA thermodynamic process can be represented using a PV diagram where the pressure and volume at every stage is recorded. In the thermodynamic process shown below the work done by the system is РА A O the area under the PV curve and positive the area under the PV curve and negative B is the product of the change in volume during the process and the change in pressure. cannot be found from the PV graph
- In a Carnot engine the hot reservoir is 67.0°C warmer than the cold reservoir. The engine's efficiency is 17.5%. Part A What is the Kelvin temperature of the cold reservoir? Express your answer in kelvins. ? Tc = K Submit Request Answer280.5 K is not correct. Please look againA Carnot refrigerator extracts 300J of heat from a 280K cold reservoir every cycle. The hot reservoir temperature is 300K. a. What is the performance of the refrigerator? b. How much input work is required for this to happen? c. How much heat is dumped into the hot reservoir?