Non-stop media coverage climaxed on June 22,when Chris Brown pleaded guilty to a charge of felony assault.
VOA: standard.2009.12.25
So why don't you tell me what the formal charge should be on the sulfur atom of thionyl chloride?
那么请大家来告诉我亚硫酰氯中,的硫原子应该有多少形式电荷?
The center of excess negative charge on all of the dipoles is at the very center of the molecule.
多出来的键,的负电荷中心都集中在,分子的正中间。
The only thing they have to pay on that is a regular interest charge to the IMF as a fee for the conversion of the currency,"
VOA: standard.2009.04.20
So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.
对于任意净电荷的情况,我们都可以这样做,比如假设我们有一个带两个正电荷的分子,那么所有的形式电荷加起来应该等于正二,等等。
"We are working on a grassroots level to identify the issues that are going on in the community, and developing and cultivating leaders to take charge of their own communities and really changing the conditions that they find themselves in.
VOA: standard.2010.02.24
So the Romans were in charge of Judea from 63 BCE on.
所以罗马人自公元前63年开始统治朱迪亚。
"We believe strongly that there is no evidence to support any charge whatsoever and we would renew our request on behalf of these three young people and their families that the Iranian government exercise compassion and release them, so they can return home,"
VOA: standard.2009.11.09
He is, after all, on trial for his life, for the charge of impiety.
他可是在接受生死攸关的审判,罪名是亵渎神明。
Well, I actually think the Russian formalists can be defended against the charge that, unbeknownst to themselves, they fall back in to form-content distinctions by insisting on this variety of dualities.
但是我认为,这些形式主义者们在不自觉中,对于形式和内容的双重性,太过偏执。
So, if we want to figure out the formal charge on the carbon, we need to take the number of valence electrons, so that's 4. We need to subtract the lone pair, what number is that? It's 2.
如果我们想算出碳原子的形式电荷,我们需要将价电子的个数,也就是四,减去孤对电子的个数,它是多少?是二。
So we end up with a formal charge on carbon of negative 1.
因此最终我们得到碳的形式电荷量是负一。
So now that means if this is where the center of positive excess charge lies and on top of it is the center there is no displacement of the charge so there is no net dipole.
所以现在我们说,如果正电荷中心,就位于,那么还是在这里负电荷中心也在这里,所以没有空间偶极。
And the electrical energy is the product of the charge on the electron times the voltage which is the potential difference through which the electron was accelerated. And so this allows me to, by increasing the voltage, increase the energy on the electron.
电子能量是电子上的电荷数,乘以电压的结果,这是种内在的差距,通过它电子运动得以加速,这也让我,通过增强电压,来增加电子能量。
And it does, so we know that we're probably on target in terms of calculating our formal charge.
而它确实是这样,因此我们知道我们很有可能,算对了我们的形式电荷。
And then we end up having 6 shared electrons, 2 from each of the bonds, so we end up with a formal charge on sulfur of plus 1.
然后我们有六个共用电子,每个键两个,因此最终硫的形式电荷量为正一。
Again we have the charge of the nucleus on plus 2, +2 but let's say this time the electron now is going to be very, very close to the nucleus.
对于我们的氦原子,我们有一次得到了原子核电荷量为,但是我们说这次电子。
We said that that second electron was so far out of the picture, that it had absolutely no affect on what the charge was felt by that first electron.
我们说第二个电子远离这张图片,这样它就彻底的对,第一个电子感觉到的电荷没有影响了,所以。
The first, which I just stated, is that the deflection of that negative particle was just far and away more extreme, much, much larger than that of the positive particle. The other assumption that he made here is that the charge on the two particles was equal.
为了这么做,他又做了更多的观察,首先,像我之前已经说了,测到的负电粒子,偏转要远远,大于正电粒子,另外一个他做了一个假设。
应用推荐