Q.3 A steel bar at a temperature of 500°C is dropped into an insulated bath containing 20 kg water at 120°C. The temperature of water and Steel reaches steadily to 150°C. If specific heat for water is 4 .180 kJ/kg-K, calculate the change in entropy of system.

Q: an airstream with a velocity of 650 m/s static pressure of 222 kpa and a static temperature of 452 k…

A:

Q: A large, insulated tank of contains 55 liters of water at a temperature of 20°C. You drop in an…

A: Given: Vtank=55 litersTwater=20°Cmice=30 gmTice=0°C

Q: Compute the change in specific entropy when helium, initially at a temper- ature of 273 K and a…

A:

Q: Q3: 1kg of air can expand reversibly in cylinder behind a piston in such a way that the temperature…

A:

Q: A 85 g ice cube at 0°C is placed on a very large table at 20°C. You can assume that the temperature…

A: Givenice at 0oCT1=0oCm=85g=0.085kgT2=20oC

Q: Q3/ 0.34 m' of a perfect gas at constant pressure of 2.8 bar is heated from 100°C to 300°C and it is…

A:

Q: A heat source at 600 K loses 1000 kJ of heat to a sink at 300 K. The Entropy generated in this…

A: Given data as per question Temperature of heat source=600 k heat=1000 kjtemperature of sink =300 kwe…

Q: Helium (1.9 kg) is being stored in a rigid tank at 21 deg C. The tank is set outside and the…

A:

Q: Q4: A diffuser, has air entering at 100 kPa, 280 K, with a velocity of 200 m/s. The inlet…

A: ◆ The exit pressure is 124.585 kPa. ◆ The exit temperature is 300 K.

Q: 20 g copper at 40 degree celsius is dropped into a constant volume calorimeter containing 100 g…

A:

Q: Q2 Calculate the total entropy change when: (a) A block of heat capacity of 200 J/K at 100 °C is…

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Q: Starting with the First Law of Thermodynamics, derive the complete expression for the change in…

A: The expression for the 1st law of thermodynamics is given as, dQ=du+dWdQ=du+pdv Here, du is the…

Q: We take a 33 kg chunk of ice (Temp is 0°C) and submerge it in an isolated container. This container…

A:

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.