The temperature of 3.00 moles of argon gas is lowered from 2.50 102 K to 2.00 102 K. (a) Find the change in the internal energy, ΔU, of the gas. J (b) Find the change in the average kinetic energy per atom.

The temperature of 3.00 moles of argon gas is lowered from 2.50 102 K to 2.00 102 K. (a) Find the change in the internal energy, ΔU, of the gas. J (b) Find the change in the average kinetic energy per atom.

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter10: Statistical Physics

Section: Chapter Questions

Problem 8P

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Concept explainers

Diatomic Gas

Molecule, is a collection of two or more atoms together (which constitute the smallest observable unit) into a pure material. There are some ways to represent the structure of a molecule. Factor symbols represent atoms in Lewis structures, and dots represent electrons that accompany them. A pair of mutual electrons (covalent bond) may be represented by a single dash. The ball-and-stick model depicts the spatial structure of the atoms better.

Question

The temperature of 3.00 moles of argon gas is lowered from 2.50 10² K to 2.00 10² K.

(a) Find the change in the internal energy, ΔU, of the gas.
J

(b) Find the change in the average kinetic energy per atom.

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