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The partial pressure of the water, of gaseous water above that equilibrium of ice and water is not one bar, it's much less.
哪里错了吗？,问题在于,冰水混合物上方的,大气中水蒸气的分压，不是一个大气压。
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and crashed onto all of the stuff in the bedroom.
然后砸下来，压在卧室里所有的东西上。
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It was highly elevated above all other priorities and absort the lion share of effort and attention of the White House.
是压在所有其他首要任务之上的,在白宫人力物力方面,都占了很大的比重。
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Pulling this lever or pushing the button would actually rotate the paper enough so that you'd be on a new line and it would also move the little imprinting head that prints the letters of the alphabet and such all the way to the left.
拉杆或按下按钮会让纸翻一下,这样你就能在新的一行上打字了,同时移动打印字母的,压印头,这样也能移到最左边。
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It is taking place inside this thing, and it's a constant pressure, and we'll do it reversibly, right. So that's what we've got.
它是绝热的，在这个内反应,是在恒压下，它是可逆的，对吧？
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There was the wonder I felt when I saw a brace of mountain like, spotted, black-and-white horses clopping down a dusty road through clouds of powdered clay.
我觉到很美妙,当我望见一大群如山般高大的，黑白斑点马压过土路,我觉到很快乐。
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If we want to know your blood pressure, you put on the cuff, you've got a measure.
如果想知道你的血压,把设备压在手腕处,就得到一个测量值
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He presents himself, in other words, as a human being of unparalleled piety and devotion who will risk life itself rather than quit the post that has been given to him.
他呈现的自我，换句话说，是极度虔诚敬神的人类,甚至压下自己的生命作赌注,也不愿放弃这个天赐的角色。
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Why didn't the guys in the middle get crushed?
为什么中间的几排人没给压扁呢
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My son,when he was in Seconde, which is the first year of French high school, they were out blocking traffic until some angry driver rolled over the foot of a protestor and then everybody kind of went off and ate pizza.
我的儿子,他高一,也就是法国高中的第一年,他们堵住交通,直到一个愤怒的司机压过一个抗议者的脚,他们才散开回去吃披萨
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And one of their behaviors is pressing the lever.
其中的一个动作便是压杠杆。
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So, this path right here from this top red path is an isobaric process.
所以上面这条红色的路径,就是个等压过程。
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OK, so this, what I've sketched here would be a constant pressure calorimeter. There's a reaction.
好，我画的就是一个恒压量热计,其中进行一个反应。
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If you have an isobaric you're going to have to calculate where the energy changes, and that's a calculation that's likely on the homework and very like on an exam as well, too.
在等压过程中,我们需要计算能量的变化，我们在作业,和考试中,就会遇到这类问题。
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so that's what we think we know in constant pressure calorimetry.
好，我想这就是我们,在恒压量热法中所知道的。
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This depends on the path. It tells you right here the path is constant pressure. These don't depend on the path, right. V doesn't care how you v get there. u doesn't care how you get there.
这由变化的具体路径决定,这个小脚标表明过程是恒压的,这些量都与具体路径无关,即不管是通过什么路径使得体积变化为Δ
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STUDENT: Just a quick question on some of the constraints, like isothermal, isobaric, isovolumetric expansion.
学生：我有个关于,等温，等压，等容等约束条件的小问题。
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And our heat of reaction or enthalpy of reaction is defined as the enthalpy at constant pressure.
我们的反应热，或反映,的焓被定义为恒压，等温。
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It's going to take place in there. It's going to be a constant pressure, it might be open to the air, or even if it isn't, there might be plenty of room, and it's a liquid anyway, so the pressure isn't going to change significantly.
也许它是液体，它在这个位置,这是恒压的，它也许是连通大气的，就算不是，它也有，足够的空间，而它是液体,压强不会显著地改变。
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We already did that. OK, dH/dT constant pressure is Cp. That was easy one.
我们已经做过这个计算了，好的，在恒压,状态下的偏H偏T就是Cp，这个很简单。
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Cp And delta T is given by the heat, which has to do with how much of the candle burnt, divided by the constant pressure heat capacity.
T等于热量q除以恒定的等压热容，其中热量与，蜡烛燃烧的多少相关。
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Over here, we have dq=Cp dT, the heat, the proportionality between heat - and temperature rise is given by this, the constant pressure heat capacity.
这里我有dq=CpdT，这是热量，这是联系热量,和温度变化的系数，恒压热容。
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dT That means that dH is also equal to dH/dT, constant pressure dT. All right, so now I've T ot more dH/dT under constant pressure.
也等于偏H偏T恒压乘以，现在我已经得到了在恒压,状态下的偏H偏。
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We're not going to have the constant pressure heat capacity, we're going to have the constant volume heat capacity, right.
这里出现的,不是等压热容,而是等体热容。
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It's constant pressure. OK, so now, last time you looked at the Joule expansion to teach you how to relate derivatives like du/dV.
这是恒压的，好，上节课你们,学习了焦耳定律,以及怎样进行导数间的变换。
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You just change volume to pressure and basically you're looking at enthalpy under a constant -- anything that's done at a constant volume path with energy, there's the same thing happening under constant pressure path for enthalpy.
可以看到这就是把体积换成了压强,一般我们都是在一种恒定状态下,考虑焓的，任何在恒容条件下,能伴随能量变化的东西，也在恒压条件下伴随焓同样地变化,所以你可以经常。
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Normally this is used for a reaction in the condensed phases and liquid usually.
通常它是用于凝聚态，液体相的反应,这是一个恒压量热计。
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The constraint isn't constant temperature because the temperature is going to be changing.
是在不停变化的，不是恒压,因为我们已经有Δp了。
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T Remember, we're trying to get delta H, p we're trying to get dH/dT constant pressure and dH/dp constant temperature. OK, these are the two things were trying to get here.
想要得到在恒压状态下的偏H偏，和在恒温状态下的偏H偏,好的，这是两个我们，在这里想要得到的东西。
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