3 ms·
The definition of a mole provided in this article is no doubt correct, but it’s not how it was taught in my high school chemistry class. For others with the sa
by WalterGR 8y ago
The definition of a mole provided in this article is no doubt correct, but it’s not how it was taught in my high school chemistry class.
For others with the same nagging thought, the explanations of Avagadro’s Law feel more familiar: https://www.britannica.com/science/Avogadros-law https://www.britannica.com/science/Avogadros-law
In particular:
The specific number of molecules in one gram-mole of a substance, defined as the molecular weight in grams, is 6.022140857 × 10^23, a quantity called Avogadro’s number, or the Avogadro constant. For example, the molecular weight of oxygen is 32.00, so that one gram-mole of oxygen has a mass of 32.00 grams and contains 6.022140857 × 10^23 molecules.
- TeMPOraL 8y agoI remember struggling with moles as a concept in school up to the point when someone finally told me that "a mole" is not like "a kilogram"; it's like "a dozen".
- sesqu 8y agoThe article does briefly discuss a slightly more accurate version of that definition, and why it's bad (it's convoluted and relies on the poorly-defined kilogram).