Happy Mole Day!

less than 1m read

·Nov 11, 2024

Hey everybody! Rocco T. Mole here to wish you a Happy Mole Day from all of us at Khan Academy!

Yes, moles! The chemistry concept, not the critter. Now, in case you’ve been living under a rock (like me), a mole is another name for Avogadro’s number which is (approximately) 6.022 times 10 to the 23rd. Kinda like how a “dozen” is another name for 12.

So why do we need a name for such a big number?! Well, we could write it like this: 602,214,129,000,000,000,000,000 (Thank you). But that would take a while! Moles make counting easier for chemists, particularly when talking about atoms or molecules.

So for the number of molecules in a cup of water, you could write an 8 with 24 zeros after it... OR you could just call it 13 moles of water instead! (Thank you Yuki) Isn't that easier?

Now, the moral of this story is: moles are the best! And if you want to learn more about chemistry, or anything, really, head to our website: khanacademy.org.

That's Khan as in Ghenghis, no relation; and Academy, as in academy. Happy Mole Day everyone! You can learn anything!

Are we still–we're not recording, right?

There's no such thing as Universally Preferable Behaviour

How To Get Rich According To Jeff Bezos

View All

I Failed - How Much Money I Lost

What’s up here, guys? It’s Grams. You know what’s easier than making money? Losing money. And unfortunately, this video is a prime example of doing exactly that because I messed up. See, two years ago, during the pandemic, where every redditor on Wall St…

15 Types Of People YOU NEED TO AVOID

It is not a strange thing to say that the type of people you surround yourself with have a significant impact on your life. After all, a lot of your time will be spent with them, and it is only natural that their habits and the things they say would affec…

Political rights of citizenship | Citizenship | High school civics | Khan Academy

In the last video, we discussed personal rights: all the rights that citizens of the United States have to control their own bodies and minds. In this video, we’re going to talk about political rights, which are the rights of citizens to participate in th…

Is this the coolest office? pt. 3