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## Homework Statement

A container has neon gas in the temperature 273 K. We heat the container to the temperature 373 k, keeping the volume constant. Find the average velocity of the molecules of neon before and after the heat.

## Homework Equations

U=3/2v

*R*T

## The Attempt at a Solution

I thought to us the formula U=3/2v

*R*T but I don't have delta U.