people say that in a gaseoues molecule particles move swiftly at a rate of 300km per sec. how they determined this. have they used kinetic energy equation to find that?direct me where can i find the information.

Well, they used the Kinetic Theory model, and did some maths to it.

 

Maxwell came up with the model for the root-mean-square (rms) molecular speed. It describes average molecular speed having a certain average molecular kinetic energy.

 

The equation is:

 

 

u is the average molecular speed

R is the molar gas constant (8.3145 J / mol K).

T is the absolute temperature (K)

M_m is the Molar mass of the gas (g / mol)

 

Source: General Chemistry 7^th. Ebbing, Gammon. p. 214. © 2002 by Houghton Mifflin Company.

300 KM/s? WOW!

PETN will only do roughly 22km/s and RDX is about the same. thats some speed it`s got!

I beg ur pardon YT2095 that figure counts for an hour and not for a second.

sorry for dissappointing u.

hai lets go with this chat for the rest of the life...

Mr.NSX I didn't get the equation. ps try to send me.

ramanan said in post #6 :

Mr.NSX I didn't get the equation. ps try to send me.

 

You mean it doesn't show up?

darn Geocities

 

Well, in text form:

 

u = sqrt (3RT / M_m)

 

u is the average molecular speed

R is the molar gas constant (8.3145 J / mol K).

T is the absolute temperature (K)

M_m is the Molar mass of the gas (g / mol)

This will help to have an idea of the speed:

http://www.chem.uncc.edu/faculty/murphy/1251/slides/C110/sld030.htm

thanx for ur effort Mr.nsx

ramanan said in post #4 :

I beg ur pardon YT2095 that figure counts for an hour and not for a second.

sorry for dissappointing u.

 

*sob* YT withdraws his Gas Molecule from the 2004 Olympics *snif*

ramanan said in post #9 :

thanx for ur effort Mr.nsx

 

You're welcome ramanan

 

YT2095 said in post #10 :

 

*sob* YT withdraws his Gas Molecule from the 2004 Olympics *snif*

 

That's a shame.