Question

First law of thermodynamics explain??????????

Answer 1

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed

Answer 2

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First law:
The change in the total internal energy of an closed system equals the heat supplied to the system subtracted by the work done by the system.

Importance:
It is a restatement of the law of conservation of energy: The total energy of an isolated system is constant over time, and energy can be transformed from one form to another, but it can neither be created nor destroyed.

Background knowledge:
A system is called closed if energy (but not matter) is allowed to be exchanged with the surroundings. A system is called isolated if both energy and matter are not allowed to be exchanged with the surroundings.

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