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State the first law of thermodynamics. Express it in mathematical form |
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Answer» The MATHEMATICAL expression which is USED to represent the first LAW of thermodynamics is ΔE = Q-w, where ΔE refers to the internal energy CHANGE of the system when ‘w’ amount of work is done by the system when it absorbs ‘q’ amount of heat and carries out ‘w’ amount of work.Explanation:the first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes, distinguishing two kinds of transfer of energy, as heat and as thermodynamic work, and relating them to a function of a body's state, called Internal energy. 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 |
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