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# How they did

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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.

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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)

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

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

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300 KM/s? WOW!

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

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

sorry for dissappointing u.

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

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

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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 / Mm)

u is the average molecular speed

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

T is the absolute temperature (K)

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

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thanx for ur effort Mr.nsx

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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*

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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.

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