According to the first law of thermodynamics, work done bya system will cause _______ in the internal energy

According to the first law of thermodynamics, work done bya system will cause _______ in the internal energy, assuming that no heat is transferred to or from the system.

Select the correct answer below:

a decrease
consistent fluctuation
an increase
no change

Expert Solution

ans) a decrease

The internal energy of the system decreases when the system does work.

According to first law of thermodynamics:

Q=w+ΔU

Q= heat supplied to the system

w= work done by the system

Δu= change in internal energy

In this case no heat is transfered to or from system

so Q= 0

so W = -ΔU or ΔU= -W

so internal inergy decreases when system does work.

queen_honey_blossom answered 2 years ago

In first law of thermodynamics, internal energy U is defined, and it is used to predict...

In first law of thermodynamics, internal energy U is defined, and it is used to predict the magnitude of heat and work conversion. However, we actually use enthalpy(H) more than U. What is the difference between U and H? And why a new thermodynamic function H is needed, even though U was first defined which is suitable for the first law?

1.What is the first law of thermodynamics? 2. Provide an example if the first law of...

1.What is the first law of thermodynamics? 2. Provide an example if the first law of thermodynamics. 3. What is entropy?

derive first law of thermodynamics formula with calculus?

a statement of the first law of thermodynamics is that a. in a spontaneous process, the...

a statement of the first law of thermodynamics is that a. in a spontaneous process, the entropy of the universe increases b. there is no disorder in a perfect crystal at 0 k. c. the total energy of the universe is constant. d. the totla energy of the universe is constant. e. mass and energy are conserved in all chemical reactions

11. How do cells transform energy? Consider the first and second law of thermodynamics. 12. Describe...

11. How do cells transform energy? Consider the first and second law of thermodynamics. 12. Describe the chemical reactions that either release or stores energy. Remembering that energy must be conserved. what do you think happens to the energy we obtain from food during cellular respiration? photosynthesis? 13. What is this energy that drive ALL cellular work? Is it a renewable source? 14. Explain how ATP transfers energy from exergonic to endergonic processes in the cell. 15. How do enzymes...

The project is to "Design and build an experiment to verify the first law of thermodynamics...

The project is to "Design and build an experiment to verify the first law of thermodynamics by stirring air with an electric motor powered paddle, in a well-insulated container." We are planning on finding the work of the motor and seeing if it equal to the change in internal energy of the container. The only problem is that we are confused on how to find the internal energy. What would be the best/easiest way to solve this? Also since the...

There is an experiment that demonstrates the first law of thermodynamics by using a tin can....

There is an experiment that demonstrates the first law of thermodynamics by using a tin can. The problem is I don't understand why there is a work done. The link to that video is https://youtu.be/jNPUCmkKiE4?list=WL&t=180 . Can someone explain to me why the tin can suddenly imploded?

Thermodynamics What is the difference between internal energy and enthalpy? a. Give a definition for each...

Thermodynamics What is the difference between internal energy and enthalpy? a. Give a definition for each quantity b. Give an example of when focusing on internal energy would be especially relevant c. Give an example of when focusing on enthalpy would be especially relevant.

Internal energy change is the sum of heat and work. Explain why the internal energy change...

Internal energy change is the sum of heat and work. Explain why the internal energy change of the reaction between hydrochloric acid and sodium hydroxide can be determined with only a small error by determining the heat of the reaction. Explain why the error woul d be larger if sodium carbonate is used as the base in place of the sodium hydroxide.

Explain how cells follow both the first and second law of thermodynamics

Question