October 29, 2019

How big is a mole? (Not the animal, the other one.) Daniel Dulek



Gotta love the TED talk animations.

We use the term mole in chemistry when we're calculating how many atoms (or molecules or formula units) are in something, or how much of a substance is needed to react with another substance.

A mole is 6.022 x 1023 of something, but that's a ridiculously large number to try to conceive of.

It's 602 200 000 000 000 000 000 000. It's HUGE, but that's okay because atoms are tiny, like really tiny.

October 22, 2019

2019 Nobel - lithium-ion batteries

Source: XKCD

That's not really what the 2019 Nobel prize in chemistry went to, but it would be funny if it had.

Instead, the 2019 Nobel prize went to a trio of scientists who developed the technology for lithium-ion batteries.