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What does come out, which is very useful is, if you do run the reaction, here's how much heat comes out.
能得到的结果是，如果我们进行这个化学反应，有多少热量放出，当然这也是很重要的。
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I figured Chemical Engineering would be the best way to get into it because it's a really broad major.
我发现化学工程应该是接触新能源的最好方式，因为这个专业覆盖面也很广。
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It's all chemical processes. Second, pardon me, second is batteries.
这都是化学的过程，第二，不好意思，第二是电池。
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It might be hard to mesh this with the conception in which all actions are the result of neurochemical physical processes.
将上述事情,与所有的行为,都是神经化学生理过程的结果,这样的概念联系在一起是有些困难的
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Unfortunately, I've never taken a course in it, but I've started reading it lately out of just my broad intellectual interest.
遗憾的是,我从未上过有机化学课,但我最近开始读一些相关的书,这是我广泛爱好中的一种
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It's much more relevant to set our zero point energy as the separation of a bond in terms of talking about the reactions that we'll usually be dealing with here.
更好的是把零点能定在,键断裂的时刻,在讨论化学反应的时候,而我们以后将经常遇到化学反应。
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Chapters 2 and 4 are really reviews of things that you probably already know something about, so they're reviews of basic chemistry.
第二章和第四章是对,一些你可能已经知道的,基础化学,蛋白质及生物化学知识的复习
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If you're going into any science that uses mathematics, chemistry, or engineering, or even economics -- you should find the contents of that useful.
如果你要进入任何要使用数学的理工科专业,比如化学,工程,甚至是经济学,你会发现书上的内容很有用
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It certainly is, it still is going to be useful to do thermochemistry.
实际上，这样的物理量在化学热力学中是非常有用的。
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Now that's pretty far fetched and not many people would say that a pop tart should be a controlled substance and regulated by government, but there are some very interesting chemical properties associated with foods like this that trigger things going on in the brain that affect us in a very big way.
这多少有点牵强,而且也没有很多人会认为,这种果酱馅饼应归为管制品,并受到政府监管,但有趣的是这种食品,确实有一些特别的化学特性,它会作用于大脑并会对我们产生大的影响
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I'm studying chemical engineering.
我的专业是化学工程。
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I was at Princeton from 83 to 86, got my master in chemical engineering Now i serve as the administrator of the United States Envrionment Protection Agency My engineering background is extremely important to the job i do everyday.
3-86年我在普林斯顿大学学习，取得了化学工程的硕士学位,我现在的职务是,美国环境保护署署长,我的工程学背景,对我现在的日常工作十分重要。
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it's a two-and-a-half-year-long program that mixes biology, chemistry, physics and computer science together.
这门课是一个两年半的项目，涵盖了生物学、化学、物理学，还有计算机科学。
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I'm an organic chemist, so I love carbon, it's one of my favorite atoms to talk about, but it would be nice to get to the point of bonding and even reactions to talk about all the exciting things we can think about once we're at that point.
我是个有机化学家，我喜欢碳原子，这是我最喜欢谈论的原子之一，但我更喜欢讲成键,甚至化学反应的概念,一旦到了这之后,我们就可以考虑各种激动人心的事情。
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Hess' Law states that for any chemical reaction, the energy change is path independent.
盖斯定律表明，对于任意化学反应，能量变化并非是路径依赖的。
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I know it's possible to induce chemical reactions, but these are exceptions. This is not the norm.
我知道催化化学反应是可能的，但是那些是特例，不是常规情况。
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It turns out that neurons relate to one another chemically in a kind of interesting way.
原来神经元之间,是通过奇妙的化学方式,而相互联系的
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So, these are all the fundamentals that are involved in chemistry that relate to physical chemistry, organic chemistry, inorganic chemistry, biological chemistry, and are a solid foundation for studying any kind of life science.
所必须知道的最基本的化学知识,这些都是和物理化学,有机化学，无机化学，生物化学有关的基础知识,也是学任何生命科学的基础。
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In fact, there's a whole chemistry department full of loony chemistry professors.
实际上，整个化学系全是,狂热的化学教授。
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The thesis of 3.091, and this is where the chemistry comes in, is that electronic structure of the elements holds the key to the understanding, not just the chemical bonding, but the long range atomic order.
这是这门课的论点，这是化学的研究点，也就是元素的电子结构,那即是理解的关键，不只是化学键，还有长程的原子排序。
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Science, particularly more advanced sciences like physics or chemistry, are all about unobservables.
科学，尤其是像物理,或者化学这样较为尖端的科学，研究的都是不可观测的事物。
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What I am going to do next day is go into the larger stoichiometry and understand the principles of mass balance and reactivity But before you go,hold it,I don't want you racing off.
下堂课我要做的是,讨论化学计量学，和,质量平衡很反应定律,但在下课之前，我不希望你们这么快走。
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There are proteins that are responsible for receiving signals, chemical signals.
还有一些蛋白是负责接收信号的,化学信号
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You see, there is a system here.
因此，化学是一个完整的系统。
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So, practitioners who understood what we would know to be chemistry were highly valued in that society. And then, you may expand it to other chemical processes, dyeing of cloth, glassmaking, and metals extraction.
所以，理解我们所知为化学的,先行者们，在那个社会是,非常宝贵的，当时，你可能将其扩展到另一个化学过程，如布料的染色，玻璃的制造，还有金属提取。
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So if you're trying to make a more complicated organic molecule carbon-carbon bonds are one of the most difficult things to make in organic chemistry, and it turns out that c n minus is a very reactive molecule, so it's a good way, even though we'll go over some drawbacks in a second, it is a good way to make carbon-carbon bonds.
如果你要合成一个更复杂的有机分子,碳碳键是有机化学中,最难制造的键之一，而实际上氰离子是一种具有很高活性的分子，用它是一个好办法，尽管我们一会儿将看到它的一些缺点，但它的确是一个制造碳碳键的好方法。
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If you could introduce that gene you'd make the chemical, in this case it's a protein called vascular endothelial growth factor.
通过导入一种生成特殊化学物质的基因,这种疗法中指的是一种蛋白,叫做血管内皮生长因子
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In those cases, though, you'd have quite a reasonable equilibrium, spontaneously that is there would be a lot of reaction that went if you simply started under practical conditions and let it go.
你也会得到平衡，尽管在这种情况下你得到了一个,自发的，合理的平衡,这是在正常条件下进行的,许多化学反应的情况。
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Versus looking at, for example, helium or neon or argon, these are all inert gases, inert meaning essentially do not react, those were grouped together in the periodic table.
相反，他发现氦，氖，氩，都是惰性气体，惰性的意思是基本不参与化学反应，因此把它们放在周期表中的同一类里。
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So platina is like a diminutive of silver, but we now know that platinum is far superior to silver It is far more noble. It has a higher melting point, a higher chemical inertness, a fantastic metal.
所以普拉塔就像一个小小的银，但我们现在知道普拉塔比银要好很多,更为珍贵，熔点更高，化学惰性更高，是一种非常不可思议的金属。
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