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Machida Group Title

Show me the second law of thermodynamics and example to apply it.

  • one year ago
  • one year ago

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  1. Machida Group Title
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    @goformit100

    • one year ago
  2. goformit100 Group Title
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    Sure

    • one year ago
  3. Machida Group Title
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    lets discuss abt it

    • one year ago
  4. RANE Group Title
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    http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/seclaw.html this explains wht it is and also provides examples to explain the concept

    • one year ago
  5. Machida Group Title
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    @RANE, I wanna discuss it here :D cmooon

    • one year ago
  6. Machida Group Title
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    I've read that @RANE

    • one year ago
  7. goformit100 Group Title
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    ya but she wants the explanation. I have many llinks like that ...

    • one year ago
  8. Machida Group Title
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    LOOOL I give up if you just link me of that lul @goformit100

    • one year ago
  9. goformit100 Group Title
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    ok lets start... yu begin first.

    • one year ago
  10. Machida Group Title
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    btw i just wnna make this subject ALIVE :D

    • one year ago
  11. Machida Group Title
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    @goformit100 Carnot?

    • one year ago
  12. goformit100 Group Title
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    ok

    • one year ago
  13. goformit100 Group Title
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    ya do you know 2nd law is defined in about 10 ways by different scientists

    • one year ago
  14. Machida Group Title
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    nah, tell me 10 :3

    • one year ago
  15. Machida Group Title
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    suppose Im your student :D

    • one year ago
  16. goformit100 Group Title
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    ok

    • one year ago
  17. goformit100 Group Title
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    All the spontaneous process are irreversible in nature.

    • one year ago
  18. Machida Group Title
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    -_-

    • one year ago
  19. Machida Group Title
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    Why thermodynamics on chem section, not in phys section?

    • one year ago
  20. goformit100 Group Title
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    0_0 Open your eyes baby

    • one year ago
  21. Machida Group Title
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    lol i have small eyes (aka squinty)

    • one year ago
  22. goformit100 Group Title
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    That can only be answered by Miss @Preetha

    • one year ago
  23. Machida Group Title
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    woka woka. im afraid now.

    • one year ago
  24. joemc Group Title
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    In chemistry, this is where entropy is usually introduced.....

    • one year ago
  25. Machida Group Title
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    @joemc . you mean like carnot?

    • one year ago
  26. Machida Group Title
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    Oh I see.

    • one year ago
  27. joemc Group Title
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    The first law introduces internal energy, U. Second law introduces entropy, S

    • one year ago
  28. goformit100 Group Title
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    Entropy of the universe always keeps on increasing

    • one year ago
  29. joemc Group Title
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    Carnot is brought in here, at least the Carnot efficiency.

    • one year ago
  30. Machida Group Title
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    Congratss for 50 SS. :3 I give you amed for it :)) you're awesome ★░░░░░░░░░░░████░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░███░██░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░██░░░█░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░██░░░██░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░██░░░███░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░░██░░░░██░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░░██░░░░░███░░░░░░░░░░░░░░★ ★░░░░░░░░░░░░██░░░░░░██░░░░░░░░░░░░░★ ★░░░░░░░███████░░░░░░░██░░░░░░░░░░░░★ ★░░░░█████░░░░░░░░░░░░░░███░██░░░░░░★ ★░░░██░░░░░████░░░░░░░░░░██████░░░░░★ ★░░░██░░████░░███░░░░░░░░░░░░░██░░░░★ ★░░░██░░░░░░░░███░░░░░░░░░░░░░██░░░░★ ★░░░░██████████░███░░░░░░░░░░░██░░░░★ ★░░░░██░░░░░░░░████░░░░░░░░░░░██░░░░★ ★░░░░███████████░░██░░░░░░░░░░██░░░░★ ★░░░░░░██░░░░░░░████░░░░░██████░░░░░★ ★░░░░░░██████████░██░░░░███░██░░░░░░★ ★░░░░░░░░░██░░░░░████░███░░░░░░░░░░░★ ★░░░░░░░░░█████████████░░░░░░░░░░░░░★ ★░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░★ @joemc BACK TO CHEM

    • one year ago
  31. joemc Group Title
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    But, a second law problem in chemisty could be something like.... Calculate the entropy change when Neon, at 25 C and 1.00 atm in a 500ml container i allowed to expand to 1 L and is simutaneously heated to 100 C

    • one year ago
  32. goformit100 Group Title
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    @Machida you care so much of others. you are so kind to the good ones.

    • one year ago
  33. Machida Group Title
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    @joemc . wait, whats for exactly that law? chem or phys first? Ya, I dont think abt it before. :o

    • one year ago
  34. Machida Group Title
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    @goformit100 because caring each other for intelligence is awesome :)

    • one year ago
  35. joemc Group Title
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    You would calculate the entropy of the system at each temperature and then calculate the difference.... Equation to follow....

    • one year ago
  36. Machida Group Title
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    wow, im too stupid of that :/

    • one year ago
  37. joemc Group Title
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    At constant pressure: \[S(T_F) = S(T_i) + \int\limits_{i}^{f} (\frac{ C_P }{ T })dT\] At constant volume: \[S(T_F) = S(T_i) + \int\limits\limits_{i}^{f} (\frac{ C_V }{ T })dT\]

    • one year ago
  38. joemc Group Title
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    So, you need to break the problem down into two steps and figure the difference of each change. One part is isothermal, the other adiabatic.

    • one year ago
  39. joemc Group Title
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    What types of problems are you looking for...the Gibbs function also is part of this and probably more approachable.

    • one year ago
  40. Machida Group Title
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    Well, let me do it tomorrow. i need to understanding that materials again. :D btw thanks a lot for make me thought abt it

    • one year ago
  41. joemc Group Title
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    OK, good night!

    • one year ago
  42. Machida Group Title
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    Good noon :D

    • one year ago
  43. Frostbite Group Title
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    I always like to give the following image of the 2. law: Consider a ball (our system) bouncing of the floor (the surroundings). The ball does not rise as high after each bounce because there are inelastic losses in the materials of the ball and floor. The kinetic energy of the ball’s overall motion is spread out into the energy of thermal motion of its particles and those of the floor that it hits. The direction of spontaneous change is towards a state in which the ball is at rest with all its energy dispersed as the disorderly thermal motion of molecules in the air and spread over the atoms of the virtually infinite floor. So what are we trying to say: We look for the direction of change that leads to the random dispersal of the total energy of the isolated system. Leading to our understanding of the second law of thermodynamics: The entropy of an isolated system increases in the course of a spontaneous change: ∆S_total > 0

    • one year ago
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