Question

What are systems in thermodynamics??

Answer 1

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System & surrounding :-

It is the oart of universe which is outside the system in region of surrounding

⭕Types of system:-

⏩Open system :
➡Exchange of both energy and mental are allowed with the surrounding

∆E not equal to 0
∆m not equal to 0

⏩Closed system:
➡ exchange of energy with the surrounding is allowed but not the matter

∆E not equal to 0 but,
∆m equal to 0

⏩Isolated system :
➡ exchange of neither neither nor energy with the surrounding is allowed.

∆E equal to 0
∆m equal to 0

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Answer 2

A thermodynamic system is a group of material and/or radiative contents. Its properties may be described by thermodynamic state variables such as temperature, entropy, internal energy, and pressure. 

I hope it is helpful for you