3. In a cycle, a 4kg ideal gas (MW=3g/mol and k=2.3) confined in a controlled mass system went through three processes. The gas was started at 20kPa and 310K in the first process, and it was isometrically increased by 30kPa. The gas was subjected to 400K using a process defined by PV^3=C. It returns to its original state polytropically. Calculate the entropy change for each process.

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Q: can you help me with this question that i found online

A: refer to the explanation section for Question 2, and Question 2.Explanation:

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.