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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
Machida Group Title
Show me the second law of thermodynamics and example to apply it.
 one year ago
 one year ago

This Question is Open

Machida Group TitleBest ResponseYou've already chosen the best response.1
@goformit100
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
lets discuss abt it
 one year ago

RANE Group TitleBest ResponseYou've already chosen the best response.0
http://hyperphysics.phyastr.gsu.edu/hbase/thermo/seclaw.html this explains wht it is and also provides examples to explain the concept
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
@RANE, I wanna discuss it here :D cmooon
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
I've read that @RANE
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
ya but she wants the explanation. I have many llinks like that ...
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
LOOOL I give up if you just link me of that lul @goformit100
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
ok lets start... yu begin first.
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
btw i just wnna make this subject ALIVE :D
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
@goformit100 Carnot?
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
ya do you know 2nd law is defined in about 10 ways by different scientists
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
nah, tell me 10 :3
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
suppose Im your student :D
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
All the spontaneous process are irreversible in nature.
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
Why thermodynamics on chem section, not in phys section?
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
0_0 Open your eyes baby
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
lol i have small eyes (aka squinty)
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
That can only be answered by Miss @Preetha
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
woka woka. im afraid now.
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
In chemistry, this is where entropy is usually introduced.....
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
@joemc . you mean like carnot?
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
The first law introduces internal energy, U. Second law introduces entropy, S
 one year ago

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
Entropy of the universe always keeps on increasing
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
Carnot is brought in here, at least the Carnot efficiency.
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
Congratss for 50 SS. :3 I give you amed for it :)) you're awesome ★░░░░░░░░░░░████░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░███░██░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░██░░░█░░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░██░░░██░░░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░██░░░███░░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░░██░░░░██░░░░░░░░░░░░░░░░★ ★░░░░░░░░░░░██░░░░░███░░░░░░░░░░░░░░★ ★░░░░░░░░░░░░██░░░░░░██░░░░░░░░░░░░░★ ★░░░░░░░███████░░░░░░░██░░░░░░░░░░░░★ ★░░░░█████░░░░░░░░░░░░░░███░██░░░░░░★ ★░░░██░░░░░████░░░░░░░░░░██████░░░░░★ ★░░░██░░████░░███░░░░░░░░░░░░░██░░░░★ ★░░░██░░░░░░░░███░░░░░░░░░░░░░██░░░░★ ★░░░░██████████░███░░░░░░░░░░░██░░░░★ ★░░░░██░░░░░░░░████░░░░░░░░░░░██░░░░★ ★░░░░███████████░░██░░░░░░░░░░██░░░░★ ★░░░░░░██░░░░░░░████░░░░░██████░░░░░★ ★░░░░░░██████████░██░░░░███░██░░░░░░★ ★░░░░░░░░░██░░░░░████░███░░░░░░░░░░░★ ★░░░░░░░░░█████████████░░░░░░░░░░░░░★ ★░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░★ @joemc BACK TO CHEM
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
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

goformit100 Group TitleBest ResponseYou've already chosen the best response.1
@Machida you care so much of others. you are so kind to the good ones.
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
@joemc . wait, whats for exactly that law? chem or phys first? Ya, I dont think abt it before. :o
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
@goformit100 because caring each other for intelligence is awesome :)
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
You would calculate the entropy of the system at each temperature and then calculate the difference.... Equation to follow....
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
wow, im too stupid of that :/
 one year ago

joemc Group TitleBest ResponseYou've already chosen the best response.1
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

joemc Group TitleBest ResponseYou've already chosen the best response.1
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

joemc Group TitleBest ResponseYou've already chosen the best response.1
What types of problems are you looking for...the Gibbs function also is part of this and probably more approachable.
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
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

joemc Group TitleBest ResponseYou've already chosen the best response.1
OK, good night!
 one year ago

Machida Group TitleBest ResponseYou've already chosen the best response.1
Good noon :D
 one year ago

Frostbite Group TitleBest ResponseYou've already chosen the best response.0
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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