On This Day In Chemistry

October 23rd

Mole Day, the unofficial holiday, was first celebrated on this day in 1991

Celebrated by chemists annually from 6.02 am to 6.02 pm on October 23rd, Mole Day commemorates Avogadro’s number (6.022 x 1023), which is the number of atoms in exactly 12 grams of carbon-12 (one mole). This was founded by the National Mole Day Foundation on 15th May 1991.
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