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And, she loved metallurgy as I do, and she named one of her dogs Maggie, and one of her dogs Molly, magnesium and molybdenum.
她和我一样都喜欢冶金学，她给一条狗取名为麦琪，另一条取名为莫丽，镁和钼。
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But, the reaction says I need twice as much mag as tickle if this reaction is going to go to completion.
但是这个反应告诉我们,镁的量应该是四氯化钛的两倍,如果要反应完全的话。
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So between b e, and b, between n and o, magnesium and aluminum, and then phosphorous and sulfur, what we see here is that we're kind of going down, or quite specifically, we are going down.
比如从铍到硼，从氮到氧，从镁到铝，从磷到硫，我们在这些地方看到有点下降，或者可以明确地说，我们确实在下降。
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OK, so now the question is, how do we know the first place that this is a suitable reductant?
好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？
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So, if I look at the mole ratios on the reaction over there I'm going to find that I'll be able to consume, at most, 1,029 over two, right?
所以，注意反应的摩尔比,我们会发现，1029摩尔的镁能被消耗，对吧？
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So, if magnesium is so abundant, why is it so expensive?
所以如果镁是如此富饶，为什么它这么贵呢？
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So, I went to the library and I looked up Advances in Molten Salt Chemistry volume six because there's an article in there about the chemistry and electrochemistry of magnesium production.
所以我去了趟图书馆，查阅了,第六版的《高级熔融态盐化学》,因为那里面有一篇关于生产镁的,化学和电化学的文章。
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Aluminum and magnesium are both made by ionic liquid electrolysis, just as I showed you last day.
铝和镁都是,由离子液体电解而成，就像我昨天讲的。
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And at the end of the reaction, you have the reactor consumed of titanium tetrachloride magnesium.
在反应的结尾时，反应器里面,消耗了四氯化钛和镁。
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But, we know for example that magnesium, when it reacts, it reacts with both of its electrons, not just one of its electrons.
但是我们知道，拿镁来说，当它发生反应的时候，并不只是，某一个电子反应，而是两个价电子都发生反应。
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It contains an million tons of magnesium, 1,000,000 tons, which is more than has ever been produced in one year by all the magnesium plants in the world.
它含有一百万吨镁，一百万吨，那比我们每年世界各地,生产镁的工厂的总产量还要多。
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He said look at sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, potassium.
他说，看，钠，镁，铝，硅，磷，硫磺，氯，钾。
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And, seawater contains only 3.7% of the total magnesium present 7% in the Earth's crust.
而海水只含有,地表镁总量的,3。
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This is much less that two times 1,054, so therefore mag is the limiting reagent.
054摩尔，远比两倍要少，镁是极限反应物。
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I can only make as much titanium as is consumed by the available magnesium.
有多少可以被消耗的镁,就能得到相应的钛。
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So, the question becomes, well, what are the resources for magnesium?
所以问题就变成了，镁资源从哪里来呢？
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We have to invent a process, a chemical extraction process that will make the production of magnesium cheaper so that we will have the opportunity to avail ourselves of energy-efficient materials.
我们必须发明出一种方法，一种化学提炼方法,能够使生产镁变得更便宜,那样我们才有机会,让我们自己用上高效能的材料。
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So, clearly magnesium resources are ubiquitous and virtually inexhaustible.
所以显然镁资源是无处不在的,几乎是用之不竭的。
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So, aluminum is about 50% denser than magnesium.
所以铝的密度比镁大一倍。
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Annual production of magnesium is about 600,000 tons per year.
每年的镁产量,大约是六十万吨。
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So, this is about a quarter of the density of steel.
所以镁的密度是贴的四分之一。
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Magnesium is a liquid but it's less dense than magnesium chloride.
镁是液体,但是它的密度比氯化镁要小。
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And magnesium is over a dollar a pound.
而镁是一美元一磅。
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Do we have magnesium to do this?
我们有镁来做这些吗？
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Magnesium was 60,000 tons.
镁的产量为每年6万吨。
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So, here's magnesium. It's very light.
我们回到原题，这是镁，它很轻。
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We can go all the way down -- magnesium aluminum, all the way to this noble gas, 3s23p6 argon, which would be n e and then 3 s 2, 3 p 6.
我们可以继续，镁，铝,一直到惰性气体，氩它是Ne然后。
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I showed you last day what happens when they form and we were able to electrolyze and make fantastic metals like magnesium.
昨天我讲过,当离子液体形成我们就可以使其电解,生成出神奇的金属，比如镁。
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Two moles of mag consume one mole of tickle, giving us one mole of Ti, and that's 515 moles of tickle consumed.
两摩尔的镁消耗一摩尔的四氯化钛，得到一摩尔钛，也就是说需要消耗掉515摩尔的四氯化钛。
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So, if we want to get more magnesium into the marketplace at an affordable price, not by government edict, what do we have to do?
所以如果我们想把更多的镁,投诸市场，并让它保持在一个不太昂贵的价格，而且不靠政府法令，我们应该怎样做？
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