warm up 11-13-15 1.balance and list the type of reaction a) _ al + _ pb(no 3 ) 2 ---> _ pb + _...
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![Page 1: Warm up 11-13-15 1.Balance and List the type of reaction a) _ Al + _ Pb(NO 3 ) 2 ---> _ Pb + _ Al(NO 3 ) 3 b) _ C 3 H 8 + _ O 2 ---> _ CO 2 + _ H 2 O 2](https://reader035.vdocument.in/reader035/viewer/2022070414/5697c0141a28abf838ccd8d1/html5/thumbnails/1.jpg)
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
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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?
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Unit 5-4 NotesUnit 5-4 Notes
Stoichiometry & Moles
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STOICHIOMETRYSTOICHIOMETRYSTOICHIOMETRYSTOICHIOMETRY• The quantitative
aspects of chemical reactions.
• Precise measurement, a recipe for chemical reactions
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How do we count?
• 1 “dozen” donuts = ____ donuts
• 1 “dozen” eggs = _____ eggs
• 1 “foot” = ______ inches
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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
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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.
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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
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Molar Mass• How to find the mass of compounds
• What is the molar mass of sugar?
• Sugar = C6H12O6
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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
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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