Steam enters a turbine a 3 MPa and 500 degrees C, then expands in a reversible adiabatic process and exhausts at 40 kPa. Changes in kinetic and potential energy are negligible. The power output of the turbine is 800 kW. What is the mass flow rate of the steam through the turbine?

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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.