所以不会有混合物的焓。

So there's no enthalpy of mixing.

我们能计算混合物的焓。

We can calculate our enthalpy of mixing.

这个方程把吉布斯自由能中的温度变化，和焓的变化联系起来。

And it relates the temperature change in the Gibbs free energy with the enthalpy change.

Now for this experiment, this is a constant enthalpy experiment for the Joule-Thomson experiment, this is equal to zero.

对于这个实验，焦耳-汤姆逊实验,是一个焓不变的实验,焓变化等于0，所以我可以。

But we've defined the enthalpy of those elements in their stable state at room temperature and pressure as zero, right?

但我们已经定义了这些,元素处于它们室温和常压下,最稳定的状态时的焓为零，对吧？

And the bigger lesson from that is that entropy, unlike energy u or enthalpy H, we could define an absolutely number for it.

热力学第三定律的一个更重要的推论是,与内能和自由焓不同，我们可以给上定义一个绝对的数值。