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About National Mole Day
United States
Ends: Oct 23, 2025
DESCRIPTION:
Mole Day brings awareness to a numerical equation. Celebrated by chemists, chemistry students, and science enthusiasts, it commemorates Avogadro's Number (6.02 x 10 to the 23rd power), a basic measuring unit in chemistry. Hence, the date and the exact time of celebration: 6:02 10/23 in the American style of writing dates.
The date also falls during National Chemistry Week, an annual event that unites the American Chemical Society, businesses, schools, and individuals in communicating the importance of chemistry in everyday life.
Avogadro's Number defines the quantity of particles (atoms or molecules) in one mole of a substance. A Mole is one of the seven base International System of Units (SI) measurements.
Mole Day in schools and universities motivates students' interest in chemistry; various activities, games, and competitions are organized that explore chemistry and moles.
Annual awards on Mole Day include the George Hague Memorial Travel Award and the Mole of the Year Award. Details on applications and requirements are available on the National Mole Day Foundation website.
NMDF was created on May 15, 1991, by Maurice Oehler, a former high school chemistry teacher from Prairie du Chien, Wisconsin.
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