Slide 1C HEM 167 F INAL R EVIEW Part 1 Slide 2 E LECTROLYTES VS. N ONELECTROLYTES Eletrolyte: Can break apart into ions Examples: salts – NaCl, acids – HF, bases –…

Slide 1 Slide 2 6.02 X 10 23 representative particles The Mole (also known as Avogadro’s number!) Slide 3 how big is a mole? how high would a stack of 1 mol of paper be?…

Slide 1 Empirical/Molecular Formulas Slide 2 Objective/Warm-Up SWBAT calculate molar mass of compounds. What is the molar mass of each of these elements? Na Cl C H Slide…

Slide 1 Empirical and Molecular Formulas Slide 2 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 Slide 3 Empirical Formula Analysis…

Slide 1 CHAPTER 3B Stoichiometry Slide 2 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 = ???…

Slide 1 SOLUTIONS Solutions : Homogeneous mixture of two or more substances. Consist of a solute and a solvent. Properties of a solution Solutions have variable composition…

MEASURING MASS A mole is a quantity of things, just as… 1 dozen = 12 things 1 gross = 144 things 1 mole = 6.02 x 1023 things “Things” usually measured in moles are…

Lesson 2 Molar Quantities Read pages: 55-57 HW â More Mole Problems â Yuk Molar mass answer key Question 1 Question 3 Na = 22.99g/mol a) Sr(CN)2 = 139.66g/mol Se = 78.96…

Chemical Quantities Chapter 7 2 lb bag of sugar 5 lb bag of potatoes 2 liters of soda-pop 3 gross of M&M’s 10 gallons of gasoline 1 dozen Krispy Kream doughnuts We…

Stoichiometry! 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 x 1023…