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So if we went through and drew out our Lewis structure following each of our steps, what we would get is this as our Lewis structure here, and we could figure out all of the formal charges.
那么如果我们按照流程,经过所有的步骤来画路易斯结构，我们会得到这样的路易斯结构，然后我们可以算出所有的形式电荷。
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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。
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And we can go through and calculate the value of this quantity in parenthesis. And, when we do so, we get the value 2.18 times 10 to the minus 18 joules.
我们能进行计算这些值,如果我们这样做，我们能算出是，2。18，乘以10，的负18焦耳。
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You have to make those calculations and there are errors in that, but you come away with a population estimate of things like that.
你必须把这些都算进去,因为其中存在误差,但这样你会得出,整体人群摄取量的估算值
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The mortgage payment was decided when you took out the mortgage, so that never changes; they than figure out what your mortgage balance is.
每月偿还额是一开始确定的,因此不变,这样就能算出当前的贷款余额
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But that would get very boring, so rather than do that, let's draw a picture.
不过这样做会很枯燥,与其一个一个地算,不如我们画张图吧
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All right. So let's test what we, in fact, know about the photoelectric effect, and before we do that actually, we're going to calculate what we would predict, so when we do the demo it will be meaningful and we can tell whether we're successful or not.
好的，我们来测试一些，我们实际上懂了,多少光电效应的东西，在我们做测试之前，我们先算一下我们能预知什么，这样我们做的测试会很有意义,并且也知道我们是否成功了。
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Raise your hand if you don't if you don't have a ping-pong ball yet.
这样就可以算,背散射的概率了。
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So it makes sense. That is good.
所以这样算就有意义了。
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Now, I could go on right the way through here, but I'm going to stop because it gets to be a bit boring after a while.
我可以就这样一直算下去,但是还是到此为止吧,因为再这样下去会很无聊
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Can I multiply the ? by the 4 just to save myself some time?
我先算?乘以4吧,这样省事儿
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Then to get the monthly payment, you take the square bracketed thing and you divide by the mortgage balance and that's the monthly payment; that's how it's calculated.
如果要算每月偿还额,你用贷款余额,除以这个方括号的值,这样就得出每月偿还额,这就是每月偿还额的计算方法
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