And I'll just point out here also, this is a conversion factor you'll use quite frequently -- many of you, quite on accident, will memorize it as you use it over and over again.

你们会经常用到，所以你们可能,会不小心记住它的值，但我们并不会在,任何考试中。

麻省理工公开课 - 化学原理课程节选