October 23, or 10-23, is always Mole Day! It celebrates the number 6.02 times 10 to the 23rd power, which is known as Avogadro’s Number. In chemistry it counts the number of atoms or molecules in “one mole” of a substance, equal to the atomic weight or molecular weight in grams. One mole of copper weighs 63.5 grams, which is about 22 pennies (minted before 1982). One mole of water weighs 18 grams, which is a little more than one tablespoon.
My tie for today celebrates the periodic table of elements. Hidden inside my shirt, a T shirt celebrates Mole Day, with a cartoon mole and the words “Proud to be a Chemist”! On the back of the T shirt you can read a long list of all the chemical elements and compounds in the human body!
No comments:
Post a Comment