The Periodic Table

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Ϻ.Λ.Ʀ.

00:26

@Brian Yep.

@TanMath Where is MAR?

TanMath

@Ϻ.Λ.Ʀ. isn't it late?

Ϻ.Λ.Ʀ.

@TanMath No, it's only 4 a.m.

TanMath

it's only 4 a.m., huh?

when do you wake up then? 2pm?

Ϻ.Λ.Ʀ.

OK, it's 3:58.

@TanMath I don't sleep.

TanMath

@Ϻ.Λ.Ʀ. for me, it is 4:29 pm...

are you sure it isn't 4:30 am there?

@Ϻ.Λ.Ʀ. on weekends?

Ϻ.Λ.Ʀ.

00:30

Something inside him shouts "NOW GET BACK TO WORK"

@TanMath Yeah.

TanMath

inside who?

Ϻ.Λ.Ʀ.

@TanMath Him.

TanMath

who is Him...you?

Ϻ.Λ.Ʀ.

Probably.

TanMath

what work do you have? more exam studying?

btw, how did the biology exam go? did you do badly since you refused to take help from me? :P

Ϻ.Λ.Ʀ.

00:43

@TanMath Bio exam in 4 hours.

Scratch that, 3.5 hours.

TanMath

you mean 3.25 hours...

remember, I can help!

Ϻ.Λ.Ʀ.

Meh, it's not a big deal.

TanMath

you sure?

last chance...

Ϻ.Λ.Ʀ.

I'm MAR.

TanMath

so?

I'm TanMath

Ϻ.Λ.Ʀ.

00:45

Then I can't be sure, since sure is someone else. I'm just MAR.

TanMath

Sure is a word!

you know what...bye... you do not need help it seems...so I am outa here...

good luck on your exam on a Saturday! (that's weird!)

3 hours later…

user116211

03:30

Okay, can anyone tell me how vapour pressure is related to entropy? This is the quote from Atkins: '[...] the vapour pressure represents the tendency of the system & its surroundings to reach a higher entropy' Can anyone help me explain this statement of Atkins?

Ϻ.Λ.Ʀ.

11:42

@user36790 Doesn't a gas have more entropy than a liquid? Problem solved.

The less the vapor pressure is, the more the system wants to get a higher entropy.

2 hours later…

M.Ibrahim

13:40

as @Ϻ.Λ.Ʀ. said, the vapor pressure represent the temperature and it is well known that any material expands by the higher temperature.

A simple example, suppose that you put a marble in a large box, and shook the box around, and you didn't look inside afterwards. Then the marble could be anywhere in the box. Because the box is large, there are many possible places inside the box that the marble could be, so the marble in the box has a high entropy.

Now suppose you put the marble in a tiny box and shook up the box. Now, even though you shook the box, you pretty much know where the marble is, because the box is small. In this case we say that the marble in the box has low entropy.

copied from : nmsea.org/Curriculum/Primer/what_is_entropy.htm

@user36790

M.Ibrahim

14:28

clearly ice is an exception for the claim that any material expand by heat.

6 hours later…