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Triaminoguanidine is a kind of non-azide nitrogen-rich flammable compound, which has some advantages of high nitrogen, good thermal stability, and high positive formation enthalpy, etc.

摘要三氨基胍是一种非叠氮类、富氮型、可燃性列含能具有高的正生成焓、热稳定性好、氮含量高等特点。

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dextro-methorphan, dextromoramide, dextromycin, dextron, dextrophobia, dextrophoria, dextropimarinal, dextroposition, dextropropoxyphene, dextrorotary,

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3G, 401(K), a,

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Crash Course 合篇

So, the formula for enthalpy is usually written as change in enthalpy.

因此,的公式通常写成

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Crash Course 合篇

And we measure enthalpy with a weird little science called calorimetry.

我们用一种叫做量法的奇怪小科学来测量

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Crash Course 合篇

Why enthalpy change is different from heat, even though they turn out to be pretty much the same anyway.

为什么不同, 尽管事实证明它们几乎是一样的。

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Crash Course 合篇

Those bonds are nothing but energy, and using enthalpy, we can measure how much energy they have.

这些键不过是能量, 使用,我们可以测量它们有多少能量。

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Crash Course 合篇

Change in enthalpy is equal to the heat gained or lost by the system.

等于系统获得或损失的量。

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化学 Crash Course

The law itself says nothing about the standard enthalpy of formation.

该定律本身并未提及标准生成

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Crash Course 合篇

So I guess in the capital H for enthalpy does kinda make sense.

所以我想在大写的 H 中表示确实有点道理。

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化学 Crash Course

So, I wonder how that compares to the amount we would predict using Hess's Law and the standard enthalpy of formation?

所以,我想知道这与我们使用赫斯定律和标准生成预测的量相比如何?

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Crash Course 合篇

Hess' Law is often stated in terms of standard enthalpies of formation.

赫斯定律通常用标准生成来表述。

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Crash Course 合篇

As long as you start with the same reactants and end with the same products, the enthalpy change is the same.

从相同的反应物开始并以相同的产物结束, 就相同。

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Thanks to many hardworking chemists, the standard enthalpy of formation has been measured for hundreds of compounds.

感谢许多辛勤工作的化学家,已经测量了数百种化合物的标准生成

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Crash Course 合篇

It's analogous to the standard enthalpy of formation that we use to calculate change in enthalpy.

它类似于我们用来计算的标准生成

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Crash Course 合篇

These measurements are done at standard conditions, which we discussed in the enthalpy and entropy episodes.

这些测量是在标准条件下完成的, 我们在和熵情节中对此进行了讨论。

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Crash Course 合篇

Hopefully that sounds like fun because more about the ins and outs of this are coming in an episode on how to measure enthalpy.

希望这听起来很有趣,因为有关如何测量的一集中将详细介绍这方面的来龙去脉。

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And I'm very happy the inventors knew how to calculate the enthalpy change of chemical reactions.

我很高兴发明者知道如何计算化学反应的

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Crash Course 合篇

In order to study this stuff carefully, he looked at the standard enthalpies of formation of the reactants and the products of a reaction.

为了仔细研究这些东西,他研究了反应物和反应产物的标准生成

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Crash Course 合篇

Note that the standard enthalpy is in kilojoules while the standard entropy is in joules per Kelvin.

请注意,标准的单位是千焦耳, 而标准熵的单位是焦耳每开尔文。

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化学 Crash Course

So there you go, the calorimetry formula gave an absolute enthalpy change of 6.2 kJ, while Hess's Law gives a change of 5.67 kJ. So, why the difference?

所以你走了,量法公式给出了 6. 2 kJ 的绝对, 而赫斯定律给出了 5. 67 kJ 的化。 那么,为什么不同?

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Crash Course 合篇

Hess's law says that the total enthalpy change for a reaction doesn't depend on the pathway it takes, but only on its initial and final states.

赫斯定律说反应的总不取决于它所采用的路径,而取决于它的初始和最终状态。

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Crash Course 合篇

Since absolute enthalpy is unknowable though, we have to be measuring from a baseline, and that baseline is that individual elements' most stable form at standard state.

由于绝对是不可知的, 我们必须从基线开始测量,而该基线是单个元素在标准状态下最稳定的形式。

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