Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Open

RANEBest 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
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
@RANE, I wanna discuss it here :D cmooon
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
ya but she wants the explanation. I have many llinks like that ...
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
LOOOL I give up if you just link me of that lul @goformit100
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
ok lets start... yu begin first.
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
btw i just wnna make this subject ALIVE :D
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
ya do you know 2nd law is defined in about 10 ways by different scientists
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
suppose Im your student :D
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
All the spontaneous process are irreversible in nature.
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
Why thermodynamics on chem section, not in phys section?
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
0_0 Open your eyes baby
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
lol i have small eyes (aka squinty)
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
That can only be answered by Miss @Preetha
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
woka woka. im afraid now.
 9 months ago

joemcBest ResponseYou've already chosen the best response.1
In chemistry, this is where entropy is usually introduced.....
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
@joemc . you mean like carnot?
 9 months ago

joemcBest ResponseYou've already chosen the best response.1
The first law introduces internal energy, U. Second law introduces entropy, S
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
Entropy of the universe always keeps on increasing
 9 months ago

joemcBest ResponseYou've already chosen the best response.1
Carnot is brought in here, at least the Carnot efficiency.
 9 months ago

MachidaBest 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
 9 months ago

joemcBest 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
 9 months ago

goformit100Best ResponseYou've already chosen the best response.1
@Machida you care so much of others. you are so kind to the good ones.
 9 months ago

MachidaBest 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
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
@goformit100 because caring each other for intelligence is awesome :)
 9 months ago

joemcBest 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....
 9 months ago

MachidaBest ResponseYou've already chosen the best response.1
wow, im too stupid of that :/
 9 months ago

joemcBest 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: \[S(T_F) = S(T_i) + \int\limits\limits_{i}^{f} (\frac{ C_V }{ T })dT\]
 9 months ago

joemcBest 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.
 9 months ago

joemcBest 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.
 9 months ago

MachidaBest 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
 9 months ago

FrostbiteBest 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
 8 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.