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Mole DayCelebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates "Avogadro's Number": 6.02 x 1023. This number--called a mole--is a basic measuring unit in chemistry. Mole Day typically falls during National Chemistry Week.https://www.acs.org/education/students/highschool/chemistryclubs/mole-day.htmlNational Chemistry WeekIn 1986, George Pimentel, then ACS president, had an idea to better educate the public about the crucial role of chemistry in everyday life. ACS organized its first official National Chemistry Day on Nov. 6, 1987. By 1989, the ACS Board had approved National Chemistry Day, and it became an annual celebration, held every year in late October. In 1993, it...

What is Mole Day? Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates Avogadro's Number (6.02 x 10²³), which is a basic measuring unit in chemistry. Mole Day was created as a way to foster interest in chemistry. Schools throughout the United States and around the world celebrate Mole Day with various activities related to chemistry and/or moles.​ For a given molecule, one mole is a mass (in grams) whose number is equal to the molar mass of the molecule. For example, the water molecule has an molar mass of 18, therefore one mole of...