February 20, 2017

Homework Help: Chemistry

Posted by melinda on Sunday, March 13, 2011 at 12:53pm.

At 20 C (approximately room temperature) the average velocity of N2 molecules in air is 1050 mph.
What is the velocity of a molecule of N2? What is the kinetic energy of a N2 molecule with this velocity? What is the kinetic energy of a mole of N2?

I know that the velocity is 469.4 m/s^2
and I know that the formula for kinetic energy is 1/2 * m * v^2

However, I cannot get the correct solution for the KE of a N2 molecule or a mole of N2.

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