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H We've been talking about atomic hydrogen, H.
我们讨论的原子氢。
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So it helps us predict, will we see this, for example, h 2, which we're going to be about to do, we'll see is stabilized because it has more bonding than anti-bonding.
这帮助我们预测，我们等会会看到，比如H2O，我们等会要讲到，我们会看到它更稳定是,因为成键比反键更多。
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H We also saw that dS for constant H and p was greater than zero.
我们同样可以看到如果保持自由焓,和压强不变熵的变化dS也是大于零的。
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Well, we would have to H+ have one of these hydrogen atoms go to an H plus, * plus an electron, right? **H --> H+ + e-** So, now we have a hydrogen ion here.
我们先要让,一个氢原子变成氢离子，加上一个电子，对么*,我们现在有一个氢离子了。
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But how do we get to 1861 and that secession crisis with Alexander H. Stephens delivering this Cornerstone Speech, declaring that, "Hey folks, it's all about slavery and its preservation?"
但事情怎么会演变到1861年那样,乃至之后的分离危机,亚历山大为何能在这篇演讲中,宣称,"嘿,伙计们,今天我要讲的是奴隶制和对其保护"
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So most scholars think that that block of material comes from a different priestly school, and so we designate that H: holiness.
因此大部分学者认为这一部分内容,出自不同的祭司学派，我们用H来代表“神圣“
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Just the .h file as we'll see is obviously named different than a .c file.
这些头文件是以，h为后缀的，完全不同于,一个，c文件。
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So we'll take h 2 and we'll run -- or actually we'll have h 2 filled in an evacuated glass tube.
我们马上就会在氢原子上试一试,我们用氢气-我们把玻璃管充满氢气。
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And now we're almost done, except what we H really want is delta H and not delta U, right.
我们差不多已经完成了,除了我们实际上想要的是Δ
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we know that h is always terminal, right after the molecule that it's attached to.
我们知道氢原子永远都在末端，放到和它成键的分子的后面。
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And we give different names, depending on what kind of electrons we're dealing with, so, for example, with h c l here, we can talk about having bonded versus lone pair electrons.
我们还起了不同的名字，给我们要处理的不同类型的电子，以氯化氢为例，我们来介绍一下成键电子与孤对电子。
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So, the first thing we do is put two electrons between h and c, and then two electrons between c and n.
那么，我们先在氢和碳之间放两个电子，然后在碳和氮之间再放两个电子。
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How do we go from that experiment to H the terms that we're trying to get, these slopes.
我们怎样从实验得到我们想要的量？,记住，我们想要得到Δ
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H- *H + e-> H-* And, clearly, we can't do both.
到一个电子生成*,但我们发现我们不能同时做到两个。
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We are going to take the sum of the delta H's delta H or the deltas H for all of these little reactions.
我们将会把这些H加和,也就是所有这些过程的。
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And the bigger lesson from that is that entropy, unlike energy u or enthalpy H, we could define an absolutely number for it.
热力学第三定律的一个更重要的推论是,与内能和自由焓不同，我们可以给上定义一个绝对的数值。
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When we increase the potential between the 2 electrodes that we have in the tube -- we actually split the h 2 into the individual hydrogen atoms, and not only do that, but also excite the atoms.
当我们增大两个电极之间电压,我们有-我们可以把氢气2,分解成单个的氢原子，不仅这样，还能激发原子。
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And so we can actually think about how do we calculate what the dissociation energy should be for h 2, so let's go ahead and do this.
因此，我们其实可以想到应该如何计算,氢分子的离解能，那么我们开始做一下吧。
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The other thing is that we can re-write our h c n in terms of bonds.
还有一件事是我们可以用键的形式来表示氰化氢。
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Do we calculate, you know, delta S, delta u, delta H?
是否要计算熵的变化，内能的变化，自由焓的变化？
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So, if we talk about dissociating h 2, we're going from the h 2 molecule, and breaking this bond right in half, so we now have two individual hydrogen atoms here.
那么，如果我们讨论的是离解氢分子，我们将从氢分子开始，使这个键断裂，一分为二，那么就得到了两个分开的氢原子。
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So, since the speed of light equals lambda nu, we can say that momentum is equal to h divided by lambda.
所以，既然光速等于λ乘以υ,我们可以得到动量等于h除以λ
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What I want to point out also is that this h hat, the Hamiltonian operator written out for the simplest case we can even imagine, which is a hydrogen atom where we only have one electron that we're dealing with, and of course, one nucleus.
我也想指出的是，我们能想到的最简单情况,的哈密顿算符，是一个只有一个电子,也只有一个原子核的氢原子。
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We somehow have to take hydrogen, attach it to carbon, and we have to make it symmetric, and we have to make it nonpolar.
我们需要把H接到C周围，而且我们需要让它是对称，且非极性的。
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- There are a few equations that you need to memorize -- those are the very simple -- very, very simple equations, such as e equals h times nu -- hopefully you don't have to sit down and try to memorize that, hopefully we all know that already.
只有几个公式是需要记住的-,它们都非常简单，非常非常简单，比如，E，等于，h，乘以，ν,希望大家不需要再专门去背了，希望我们已经都记住了。
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OK, delta H is delta of u plus pV. By definition that's how we define enthalpy up here.
好，ΔH=Δ,根据定义，这就是我们。
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And if we picture those two coming together, we form the h 2 molecule.
如果我们想象它们两个靠近时，我们会形成H2分子。
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X This is H. We've got one "x" here.
这是H，我们得到了一个。
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