One of the biggest social events on the ACS calendar is Mole Day, a national celebration held from 6:02 a.m. to 6:02 p.m. October 23 of each year. For those of you who are wondering why this particular date and time, a mole is 6.02 x 10 23 particles of a substance (that's about 18 g of water, 58.44 g of sodium chloride, or 196.967 g of gold). |