What Is the Average Kinetic Energy of a Nitrogen Molecule at 25°C?

[M9501]

Homework Statement

The average kinetic energy of a nitrogen molecule at temperature 25c is _____ .

Select the correct answer.
1)5*10^(-21) J
2)3*10^(-20) J
3)1*10^(-20) J
4)9*10^(-20) J
5)8*10^(-21) J
(i guess they are all wrong )

Homework Equations

KE=3/2 K.T

The Attempt at a Solution

KE(av)=3/2 KT = 3/2 * 1.38*10^(-23) * (25+273)=6.1686*10^(-21) J

i just want to know whether my solution is correct or no ..

 

[mfb]

A nitrogen molecule is not a single atom. It can rotate...

 

[M9501]

A nitrogen molecule is not a single atom. It can rotate...

got it thanks

K.E=5/2 KT