Warm up 11-13-151. Balance and List the type of reaction

a) _ Al + _ Pb(NO3)2   --->  _ Pb + _ Al(NO3)3

b) _ C3H8 + _ O2 ---> _ CO2 + _ H2O

2. A reaction yield 25%, how many grams of CO2 produced if the expected amount is 80g?

AgendaGo over homeworkNotes Unit 5-4Mole Poster Due Monday

HomeworkNov 20 - Quiz Unit 5Nov 21 - Online HW Unit 5Dec 9 - Deadline to retake quizzes and turn in absent work

1. Balance and List the type of reaction

a) _ Al + _ Pb(NO3)2   --->  _ Pb + _ Al(NO3)3

b) _ C3H8 + _ O2 ---> _ CO2 + _ H2O

2. A reaction yield 25%, how many grams of CO2 produced if the expected amount is 80g?

Unit 5-4 NotesUnit 5-4 Notes

Stoichiometry & Moles

STOICHIOMETRYSTOICHIOMETRYSTOICHIOMETRYSTOICHIOMETRY• The quantitative

aspects of chemical reactions.

• Precise measurement, a recipe for chemical reactions

How do we count?

• 1 “dozen” donuts = ____ donuts

• 1 “dozen” eggs = _____ eggs

• 1 “foot” = ______ inches

A “Mole”• 1 mole = 6.02 x 1023 particles

• Mole = amount of a substance “mol”

• Avogadro’s Number

• Based on the weight of carbon-12 atoms.

1776 – 18561776 – 1856

Just How Big is a Mole?Just How Big is a Mole?

• Enough soft drink cans to cover the surface of the earth to a depth of over 200 miles.

• 602,200,000,000,000,000,000,000 unpopped popcorn kernels and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles.

• If we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count the atoms in one mole.

Molar Mass• The mass of 1 mole (not 1 atom) of a

substance• Units: g/mol

• Molar Mass vs. Atomic MassCopper Copper6.02 x 1023 atoms 1 atom 63.5 g/mol 63.5 amu

Molar Mass• How to find the mass of compounds

• What is the molar mass of sugar?

• Sugar = C6H12O6

1. How many atoms are in 1 mole of boron?6.02 x 1023 atoms

2. How many atoms are in 2 moles of H2O?

12.04 x 1023 atoms

3. What is the atomic mass of Oxygen?Atomic mass= 16 amu (1 atom of oxygen)

4. What is the molar mass of oxygen?Molar mass= 16 g/mol

5. What is the molar mass of H2O

18 g/mol

Check-In

Mole Project (10 points)

Individual Project Due Next Class

-Create a “mole” theme poster

-Hand drawn and Color

-Include a 3 key terms from today’s note.

Example theme:

Moleo and Juliet MolethelloHan Molo MoledamortMoleius Caesar Whack-a-moleyAngry Mole Pepto BismolePikamole InstaMole