Internal Energy Homework: Compare & Rank H2 Molecules in Containers

In summary, the conversation is about comparing the internal energies of different containers containing H2 molecules at the same temperature. The correct ranking of internal energies is D>B>A>C. The question also prompts the reader to consider the concepts of intensive and extensive quantities in determining the answer.
  • #1
Linzy
5
0

Homework Statement



Compare the Internal (or Thermal) energies of the different containers sketched below. Choose the correct ranking of the internal energies provided. Each container contains H2 molecules with the shown amount (the number of molecules) at the same temperature.

a) A=B=C=D b) A>B>C>D c) C>A>B>D d) D>B>A>C

http://img293.imageshack.us/img293/999/physicspicsa4.jpg


Homework Equations





The Attempt at a Solution



I believe the answer is D, because D has a greater amount of molecules, then it gradually decreases.
 
Last edited by a moderator:
Physics news on Phys.org
  • #2
Sure...the question tries to make you realize whether internal energy is an intensive or an extensive quantity: have you had those concepts?
 
  • #3
I just want to make sure... D is the correct answer?
 
  • #4
Yes. Why the doubt?
 

1. What is internal energy?

Internal energy is the total energy contained within a substance or system. It includes the kinetic and potential energies of all the particles within the system, including atoms and molecules.

2. How is internal energy different from heat?

Internal energy and heat are closely related, but they are not the same. Internal energy refers to the total energy contained within a system, while heat is the transfer of energy from one system to another due to a temperature difference.

3. How do you measure internal energy?

Internal energy is typically measured in joules (J) or kilojoules (kJ). It can be calculated using the formula Q = mCΔT, where Q is the change in internal energy, m is the mass of the substance, C is the specific heat capacity, and ΔT is the change in temperature.

4. What factors affect the internal energy of a system?

The internal energy of a system can be affected by various factors, including the temperature, pressure, and volume of the system. The type and amount of substance in the system also play a role, as well as any external energy added or removed from the system.

5. How can H2 molecules in containers be compared and ranked based on internal energy?

The internal energy of H2 molecules in containers can be compared and ranked by considering the temperature, pressure, and volume of the containers. Additionally, the number of H2 molecules and any external energy added or removed from the system can also impact the internal energy and therefore the ranking of the containers.

Similar threads

Thermodynamics: Internal Energy, Heat and Work Problem
    • Introductory Physics Homework Help
Replies
1
Views
891
Correct statement about internal energy
    • Introductory Physics Homework Help
Replies
25
Views
3K
Internal energy of an ideal gas as a function of temperature
    • Introductory Physics Homework Help
Replies
2
Views
3K
Internal energy of a container filled with water & steam
    • Introductory Physics Homework Help
Replies
12
Views
1K
Pressure-volume graph and internal energy
    • Introductory Physics Homework Help
Replies
16
Views
3K
How to find internal energy with constant temperature?
    • Introductory Physics Homework Help
Replies
3
Views
1K
Change in internal energy when water is heated from 0 to 4c
    • Introductory Physics Homework Help
Replies
7
Views
3K
Understanding Internal Energy Changes in Phases of Water
    • Introductory Physics Homework Help
Replies
8
Views
2K
Need help with finding thermal and Kinetic energy
    • Introductory Physics Homework Help
Replies
20
Views
2K
Work Done Compressing a Gas
    • Introductory Physics Homework Help
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top