So, why don't you go ahead and tell me, keeping that in mind, which atom in terms of h c or n would you expect to be in the center of hydrogen cyanide?
那么,请大家来告诉我,并且记住它,你认为氢,碳和氮中哪个原子,应该在氰化氢的中间呢?
So, which atom would you expect to be in the center of a Lewis structure for thionyl chloride?
那么,大家认为那个原子应该在,亚硫酰氯的路易斯结构的中心位置呢?
Well, you can buy a pass, which would seem conceptually not to be a ticket, but at top left was somewhat obvious this time bus and subway tickets.
好的,你可以买一张通票,那好像不是一张票,但是,在右上边,这次显然是,公共汽车和地铁票。
If you just introduced this polio virus, which you could make in large quantities into people now, you would be causing polio.
如果你直接接种脊髓灰质炎病毒,将大量的病毒直接接种到人体,就会引起小儿麻痹症
And there's another question which you would no doubt be concerned to discuss, namely what would such Socratically purified ? music and poetry look like?
而另一个,你们一定会想要讨论的问题是,何谓经苏格拉底纯化过的,音乐与诗学形式?
I wish there were some easy litmus test that I could just give you so you'd know which of you would be making a mistake taking this class.
我希望能有一种简单的石蕊测试,让我可以直接展示给你们并让你们知道,你们中的谁上这门课是一个错误。
Well, I just think that if he was making his own original idea and it was his idea to start with, then that would be the only situation in which I would see it being appropriate in any way because that way you couldn't make the argument that he was pressured, you know it's three-to-one or whatever the ratio was.
我只是认为,如果这就是他的本意,是他主动要求被杀的,只有在这种情况下,我才认为无论从哪方面来说都是恰当的,因为那样的话,就不能说派克是被迫的,毕竟当时是3对1的局面,派克不占优势。
If you had a perpetuity, which paid C/2 forever, you already know from the perpetuity formula that the value of that would be C/2 divided by r/2 if r/2 is the discount rate.
如果你有一只永续债券,每半年付息C/2,没有到期日,从永续债券的公式可以知道,债券价格等于C/2除以r/2,r/2为贴现率
So let`s look what we`ll have if go to the graphic version We have the graphic version And you have all the pictures, all the beautiful graphics and links Which you probably would not be able to use if you have a vision of pyramids or were blind Actually the text is very small, too.
现在让我们看看进入图片版会看到什么,现在进入图片版,可以看到所有的图片,漂亮的图像和链接,可能戴上3D眼镜,或者是盲人的话就看不到了,但文本字号实际上太小了。
We can also think about the distance, the bond distance. So, which would you say is going to be shorter in this case?
我们还可以考虑一下距离,键的距离那么,大家认为其中哪一个键会更短一些?
And in terms of thinking about it for organic chemistry or if you're interested in thinking about the mechanism maybe by which it is toxic, a first step would be to draw its Lewis structure.
而为了在有机化学中思考它,或者如果你对它,有毒的机理感兴趣的话,第一步要做的应该就是画出它的路易斯结构。
And the bond order you get out will either be, for example, zero, which would mean that you have no bond, 5 or you could have 1, a single bond, 1 . 5, a 1 and 1/2 bond, 2, a double bond, and so on.
你得到的键序要么是比如说是零,这意味着没有键,或者你会得到1,单键1。,1又二分之一键,2,一个双键,等等等等。
by asking, which of them are so valuable you'd be prepared to do them even if they would introduce what isn't otherwise there, ? namely, the risk of death?
通过问自己,什么事如此有价值,以至于你准备好要去做,即便它们会带来如果不去做就不会有的,也就是,死亡的风险?
But I want you to tell me in terms of thinking about formal charge, which Lewis structure would you predict to be the most stable?
但我想让大家告诉我,从形式电荷的角度考虑,你会预测哪一个路易斯结构是最稳定的?
So, they developed this bifurcated tool, which would be appl--you'd put the stuff on the surface of the tool and then you'd scratch the skin in a certain way so that you could produce sort of a reproducible introduction of the vaccine into the skin.
所以他们发明了一种分为两叉的工具,把疫苗抹在这种工具表面上,然后以某种方式在皮肤上刮,这样就能将疫苗,重复不断地引入到皮下
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