CHAPTER 3B Stoichiometry. Counting Atoms Amu – atomic mass unit 1 amu = 1.66 x 10 -24 g Ex. 1 carbon atom = 12 amu 1 Fe atom = 55.85 amu 1 Na atom = ???
Moles!. Whatcha talkn’ about a mole? First…a dozen. 12 cookies = 12 bagels = 12 cans = 12 footballs = 12 dance moves = As scientist we need to determine.
“How Big is a Mole Worksheet”
A DOZEN roses = 12 roses