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

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

B. A change in internal energy causes work to be done and heat to flow into the system

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

D. The energy that flows into the system is transformed into heat and work

Question

07-03-2017
Chemistry

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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?

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

B. A change in internal energy causes work to be done and heat to flow into the system

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

D. The energy that flows into the system is transformed into heat and work

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throwdolbeau throwdolbeau · Answer 1 · 2022-03-04T12:10:49+01:00

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.

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