Chemical Quantities
How many eggs are there in 5 dozen? How many moles are in 2.25 grams of the element iron, Fe?
CHAPTER 3b
Empirical and Molecular Formulas. Formaldehyde CH 2 O Acetic acid C 2 H 4 O 2 Gylceradehyde C 3 H 6 O 3 40% C; 6.7% H; 53.3% O.
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 = ???
Lesson 2 Molar Quantities Read pages: 55-57 HW – More Mole Problems – Yuk.
Stoichiometry! The heart of chemistry. The Mole The mole is the SI unit chemists use to represent an amount of substance. 1 mole of any substance = 6.02.
