Which of the following statements best describes the first law of thermodynamics

Question

Which of the following statements best describes the first law of thermodynamics?

A.Heat released by the system is absorbed by the surroundings.

B.The total energy of the universe is decreasing.

C.E = Efinal – Einitial

D.The work done by a system equals the work done on the surroundings.

E.The energy gained or lost by a system must equal the energy lost or gained by the surroundings.

F. Energy can neither be destroyed or Created, but it can change from one form to another.G.The sum of all the kinetic and potential energies of all componets in a system is constant.

H.Euniv = Esys + Esurr =0

I.E = q + w

Explanation / Answer

The statement which best describes first law of thermodynamics is F. Energy can neither be created not be destroyed, but it can change from one form to another.

Statements like D, E, H, I are also related to first law of thermodynamics but are simply representing a thermodynamics system, rather than representing the essence of the first law.

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