## Statistical Physics, Volume 5Elementary college physics course for students majoring in science and engineering. |

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Page 43

This means that Na is also equal to the number of molecules, of molecular weight

u, which have a total mass of p grams. The number Na is called

number. One mole of a certain kind of molecule (or atom) is defined as a quantity

...

This means that Na is also equal to the number of molecules, of molecular weight

u, which have a total mass of p grams. The number Na is called

**Avogadro's**number. One mole of a certain kind of molecule (or atom) is defined as a quantity

...

Page 44

2.6 X 109

single N2 molecule is or t; > 5.1 × 104 cm/sec. (30) Mean free path Focusing

attention on a molecule in a gas at any instant of time, let us estimate the average

...

2.6 X 109

**Avogadro's**number) have a mass of 28 n .65 x gm, the mass m of asingle N2 molecule is or t; > 5.1 × 104 cm/sec. (30) Mean free path Focusing

attention on a molecule in a gas at any instant of time, let us estimate the average

...

Page 140

3.8 Number of states of an ideal gas Consider an ideal gas consisting of N

particles confined within a box with edge lengths L., Ly, and L. Here N is

supposed to be of the order of

contribution ...

3.8 Number of states of an ideal gas Consider an ideal gas consisting of N

particles confined within a box with edge lengths L., Ly, and L. Here N is

supposed to be of the order of

**Avogadro's**number. By considering the energycontribution ...

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### Contents

Characteristic Features of Macroscopic Systems | 1 |

A I | 2 |

I | 6 |

Copyright | |

26 other sections not shown

### Common terms and phrases

absolute temperature absorbed accessible approximation assume atoms average Avogadro's calculate classical collision Consider constant container corresponding cules denote discussion distribution ensemble entropy equal equilibrium situation equipartition theorem example exchange energy expression external parameters fluctuations function given heat capacity heat Q heat reservoir Hence ideal gas initial internal energy interval isolated system kinetic energy large number left half liquid ln Q macroscopic parameters macroscopic system macrostate magnetic field magnetic moment magnitude mass mean energy mean number mean pressure mean value measured mechanics mole molecular momentum number of molecules occur oscillator particle particular partition phase space piston position possible values Prob quantity quantum numbers quasi-static random relation result simply solid specific heat spin system statistical statistical ensemble statistically independent Suppose thermal contact thermal interaction thermally insulated thermometer tion total energy total magnetic total number unit volume velocity