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?

My Thoughts On Paying Higher Taxes | Kamala Harris Tax Plan

Models of citizenship | Citizenship | High school civics | Khan Academy

View All

Molecules Bumping Into One Another | Genius

Should I brew more? Still warm, and it’s been awhile. But the Law of Cooling is a decaying exponential. But you need a measurement on the liquid to get the heat transfer coefficient. Don’t worry about the measurement for now. We’ll find a new way to thin…

Creativity break: how have you used creative communication to solve a problem? | Khan Academy

[Music] I’ve used creative communication to solve problems related to especially people learning different science. For example, in chemistry, people sometimes have a hard time understanding subatomic particles and molecules and atoms, and making those co…

I’m not engaged anymore..

So first of all, if it wasn’t obvious from the title, this is not going to be my normal personal finance market update style video like I usually do. Don’t worry, those are coming back soon, but from now on, they’re going to be a little bit different movi…

Breaking apart 3-digit addition problems | 2nd grade | Khan Academy