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The first law of thermodynamics states that ΔE=Q-W. How is this also a statement of the principle of conservation of energy?

AThe work that is done by the piston is transformed into heat and a change in internal energy

BA change in internal energy causes work to be done and heat to flow into the system

CThe heat that flows into the system is transformed into work and a change in internal energy

DThe energy that flows into the system is transformed into heat and work

Verified Answer :

The first law of thermodynamics states that ΔE=Q-W. Statement that is true is:

C. The heat that flows into the system is transformed into work and a change in internal energy.

First law of thermodynamics:

Energy can neither be created nor be destroyed, it can only be transferred from one form to another. The first law for a thermodynamic process without transfer of matter is often formulated as: ΔE=Q-W

ΔE denotes the change in the internal energy of a closed system (for which heat or work through the system boundary are possible, but matter transfer is not possible), Q denotes the quantity of energy supplied to the system as heat, and W denotes the amount of thermodynamic work done by the system on its surroundings.

Find more information First law of thermodynamics here:

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