Question

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$\bold {state \: first\: law\: of\: Thermodynamics}$

Answer 1

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$\small{Answer:}$

✨ First law of thermodynamics is based on the law of conservation of energy which states that Energy can neither be created nor destroyed during a process, although it may be converted from one from to another.

✨ The first law of thermodynamics can be defined in the following forms:

Heat is a work and work is a heat. The total energy of an isolated system must remain constant. Whenever a certain quantity of one kind of energy disappears, an exactly equivalent amount of some other kind must appear. If system gained or loss energy then exactly equivalent amount of energy of surrounding will have loss or gained.

The first law of thermodynamics is experimental law which has not theoretical proof but this law has not violated yet. 

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Answer 2

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It states that heat energy given to a system is equal to the sum of the increase in internal energy and and work done by the system.

dQ = dU + dW

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