1. Calculate the molar mass of the following: a. C 4 H 8 O 4 e. C 12 H 22 O 11 b. NaHCO 3 f. C 8 H 8 O 3 c. NaCl g. C 6 H 12 O 3 N 2 d. C 9 H 14 O 6 h. C 4 H 8 O 3 WARM-UP 12/11/13
Jan 19, 2016
1. Calculate the molar mass of the following:
a. C4H8O4 e. C12H22O11
b. NaHCO3 f. C8H8O3
c. NaCl g. C6H12O3N2
d. C9H14O6 h. C4H8O3
WARM-UP 12/11/13
Rest of the SemesterMonday Tuesday Wednesday Thursday Friday
9Extra Credit Project due
Review Test 1 Material
10Review Test 2 Material
11Review Stoichiometry Intro to Cookie Lab
12Cookie Lab
Final Review
13Debrief Lab
Holiday Party
16Final Final Review
17Finals (1 & 4)
18Finals (2 & 5)
19Finals (3 & 7)
20Finals (6 & 8)
Review stoichiometry
12/11/13 Objective
12/11/13 Agenda
• Stoichiometry
• Intro to Cookie Lab
Stoichiometry SheetWhat numbers and units are given
in the problem?
What units is the problem trying to find?
Intro to Cookie LabStoichiometry is all about writing recipes.Let’s apply stoichiometry to a chocolate chip cookie recipe:a. Flour - C4H8O4
b. Baking Soda - NaHCO3
c. Salt - NaCld. Butter - C9H14O6
e. Sugar (brown and white) - C12H22O11
f. Vanilla extract - C8H8O3
g. Egg - C6H12O3N2
h. Chocolate chips - C4H8O3
Intro to Cookie Lab
Flour + Baking Soda + Salt + Butter + Brown Sugar + White Sugar + Vanilla extract + Egg + Chocolate chips
Chocolate chip cookies
Reactants Products
Intro to Cookie Lab
2.66 mol flour 0.0335 mol baking soda
0.036 mol salt 1.084 mol butter
0.44 mol white sugar 0.31 mol packed brown sugar
0.624 mol eggs 0.062 mol vanilla
2.82 mol chocolate chips
0.5 mol
chocolate chip dough
Reactants Products
Intro to Cookie LabPurpose: Determine the mass of
each reactant in a chocolate chip cookie recipe needed to react with 50 g of egg
(approximate mass of 1 egg).
Pre-LabThese questions must be answered prior to starting the lab tomorrow.1. How many moles is one egg
(C6H12O3N2) if the mass of one egg is 50 g?
Pre-Lab2. Set up a chart like the following:
Pre-Lab
Mole ratio from recipe
Pre-Lab3. Based on the Law of Conservation of Mass, what do you predict the formula for chocolate chip cookie dough to be?
4. What would be the molar mass of chocolate chip cookie dough?
5. If one cookie has the mass of 12g, how many cookies could be made from 1 egg?
Tutoring Today!4th – Mr. Sapin – Rm. 403
12/11/13 Homework
Pre-Lab Questions