So if we have a negative change in energy for any reaction as it's written, what that actually means is we're giving off energy as the reaction proceeds.

如果我们像这里写的这样,在任何一个反应过后，得，到的能量变化为负值,这就意味着我们在这个过程中放出了能量。

麻省理工公开课 - 化学原理课程节选

And all of that is coming out of the heat of reaction, whether it's positive or negative.

所有这些都来源于反应热,它可以是正的或负的。

麻省理工公开课 - 热力学与动力学课程节选

And the change in energy for this reaction is negative 349 kilojoules per mole.

然后得到这个过程的能量变化为,负的，349，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

And, because I looked at the website, I know this reaction has a negative number.

因为我看过网站，我知道这个反应是一个负值。

麻省理工公开课 - 固态化学导论课程节选

So delta u of reaction is approximately equal T to negative Cv for the calorimeter times delta T.

所以反应的ΔU近似等于,负的量热计的Cv乘以Δ

麻省理工公开课 - 热力学与动力学课程节选

The reaction to a model was strongly negative.

第一反应就是强烈反对这个模型。

麻省理工公开课 - 固态化学导论课程节选