April 20, 2014

Homework Help: CHEM ideal gas

Posted by Kimora on Saturday, December 6, 2008 at 2:51pm.


i am working on trying to derive KE (or Etrans)=3/2nRT

so i know these steps



pV= nRT

and pV= 1/3 NmV2

and combining them, we get

nRT= 1/3Nmv2

also, we know that for translational motion, KE= 1/2Nmv2


i don't know how

2/3 (1 /2 Nmv2) = nRT

where did that 2/3 come from??!!

i know that subsequently, it will be 2/3KE= nrt

and i will get KE=3/2 nRT

i just don't KNOW WHERE THE 2/3 came from in the first place!

Answer this Question

First Name:
School Subject:

Related Questions

Physics ideal gases - Would someone check my thinking please. PVT of an ideal ...
Algebra - In chemistry, n molecules of an ideal gas have pressure (P), volume (V...
Chem Ideal Gas Law - A 1.05 g sample of an ideal gas occupies 1.045 L at 20.0C ...
chemistry - In the Ideal Gas Law, where PV = nRT, R is ?
Chemistry - If 3.21 mol of a gas occupies 56.2 L at 44*C and 793 torr, 5.29 mol ...
physics - A 2.10 mol sample of oxygen gas is confined to a 5.10 L vessel at a ...
REETA - A 2.10 mol sample of oxygen gas is confined to a 5.10 L vessel at a ...
CHEM - A gaseous hydrocarbon (an organic compound consisting of C & H) weighing ...
chem - a 1,000 ml coke bottle is 1/3rd filled with coke, and the rest occupied ...
AP Chemistry - The normal boiling points of CO and SO2 are -192 degrees C and -...