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A day to celebrate chemistry’s favorite unit — the mole. But what’s a mole?

  • Written by Tara S. Carpenter, Senior Lecturer and General Chemistry Coordinator, University of Maryland, Baltimore County
Mole Day is an unofficial holiday celebrated among chemists on Oct. 23, between 6:02 a.m. and 6:02 p.m. The time and date are derived from Avogadro's number.Ekaterina_Minaeva/Shutterstock.com

On Oct. 23, between 6:02 a.m. and 6:02 p.m., chemists celebrate Mole Day. Mole Day is not a day to celebrate those furry little creatures that live in the...

Read more: A day to celebrate chemistry’s favorite unit — the mole. But what’s a mole?

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