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A list of American colleges and universities that offer financial aid to foreign students can be found at edupass.org -- e-d-u-p-a-s-s dot o-r-g.
VOA: special.2009.02.05
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I'm going to call it r. It's going to be the gas constant, and now I have r times t is equal to the limit, p goes to zero of p r.
如果去掉p趋于0的条件,在有限压强下都,保持RT=pV的关系。
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pV=RT dT here because the pressure is constant, dV=RdT/p so dV is equal to R over p dT.
因为对1摩尔气体有，于是。
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And we call that most probable radius r sub m p, or most probable radius.
我们叫它ｒ小标ｍｐ,或者最可能半径。
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P dV is equal to R dT. pV = RT for 1 mole, pdV=RdT so I just take dV here.
对等压过程，那么。
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It's true for any gas, and if I remove this limit here, r t is equal to p v bar, I'm going to call that an ideal gas.
这样的气体被称作理想气体,这就是理想气体的性质，理想气体的涵义是什么？
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And that's what we label as r sub m p, or your most probable radius.
或者最可能半径，这是你找到。
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So instead of v bar, we write p v bar minus b, equal r t.
现在考虑，这些气体分子之间。
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pV=RT p plus a over v bar squared times v bar minus b equals r t. All right if you take a equal to zero, these are the two parameters, a and b. If you take those two equal to zero you have p v is equal to r t.
我们就回到,也就是理想气体,状态方程,下面我们来看看,这个方程。
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We want a relationship in p-V space, not in T-V space. So we're going to have to do something about that. But first, it turns out that now we have this R over Cv.
我们想要p-V空间中的结果，而不是T-V空间中的,因此需要做一些变换，先来看现在的关系，它跟R/Cv有关。
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So I can instead of the dV here, I can insert this R over p dT.
两个p消掉了，结果。
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