Chapter 8
The Mole
Part 2
What is Avogadro’s Favorite Music
What is Avogadro’s Favorite Music
Converting Moles and Grams
Aluminum is often used for the structure of
light-weight bicycle frames. How many
grams of Al are in 3.62 moles of Al?
a
•1 mole Al = ?
•1 mole Al = ?
•1 mole Al = 27.0 g Al
What are the conversion factors?
•1 mole Al = 27.0 g Al
What are the conversion factors?
•1 mole Al = 27.0 g Al
27.0g Al
1 mol Al
or
1 mol Al
27.0 g Al
What are the conversion factors?
•1 mole Al = 27.0 g Al
27.0g Al
1 mol Al
or
1 mol Al
27.0 g Al
Aluminum is often used for the structure of lightweight bicycle frames. How many grams of Al are
in 3.62 moles of Al?
•1 mole Al = 27.0 g Al
•Conversion factors for Al
27.0g Al
or
1 mol Al
1 mol Al
27.0 g Al
3.62 moles Al
•1 mole Al = 27.0 g Al
•Conversion factors for Al
27.0g Al
or
1 mol Al
1 mol Al
27.0 g Al
3.62 moles Al 27.0 g Al
1 mole Al
= 97.7g Al
A can of diet cola contains about 200.0 mg of the
artificial sweetener aspartame (Nutra-Sweet)
formula C14H18N2O5 . It is used to sweeten diet
foods, coffee and soft drinks. How many moles of
aspartame are present in a can of diet cola?
A can of diet cola contains about 200.0 mg of the
artificial sweetener aspartame (Nutra-Sweet)
formula C14H18N2O5 . It is used to sweeten diet
foods, coffee and soft drinks. How many moles of
aspartame are present in a can of diet cola?
200.0 mg
A can of diet cola contains about 200.0 mg of the
artificial sweetener aspartame (Nutra-Sweet)
formula C14H18N2O5 . It is used to sweeten diet
foods, coffee and soft drinks. How many moles of
aspartame are present in a can of diet cola?
200.0 mg 0.001g
mg
A can of diet cola contains about 200.0 mg of the
artificial sweetener aspartame (Nutra-Sweet)
formula C14H18N2O5 . It is used to sweeten diet
foods, coffee and soft drinks. How many moles of
aspartame are present in a can of diet cola?
14(12.0) + 18(1.0) + 2(14.0) + 5(16.0) = 294.0 g/mol
200.0 mg 0.001g
mg
mol
g
A can of diet cola contains about 200.0 mg of the
artificial sweetener aspartame (Nutra-Sweet)
formula C14H18N2O5 . It is used to sweeten diet
foods, coffee and soft drinks. How many moles of
aspartame are present in a can of diet cola?
14(12.0) + 18(1.0) + 2(14.0) + 5(16.0) = 294.0 g/mol
200.0 mg 0.001g
mg
mol
294.0 g
6.803 x 10-4 mol C14H18N2O5
How many aspartame molecules would you
consume for each can of diet cola that you drank?
How many aspartame molecules would you
consume for each can of diet cola that you drank?
6.803 x 10-4 mol C14H18N2O5
How many aspartame molecules would you
consume for each can of diet cola that you drank?
6.803 x 10-4 mol C14H18N2O5
mol
How many aspartame molecules would you
consume for each can of diet cola that you drank?
6.803 x 10-4 mol C14H18N2O5
molecules
mol
How many aspartame molecules would you
consume for each can of diet cola that you drank?
6.803 x 10-4 mol C14H18N2O5
6.02 x 1023 molecules
mol
= 4.10 x 1020 C14H18N2O5 molecules
410,000,000,000,000,000,000
410 million trillion aspartame molecules
• What does it weigh?
– 294.0 g
• How many C14H18N2O5’s?
– 6.02 x 1023 C14H18N2O5 molecules
• How many carbon atoms?
– 14(6.02 x 1023) C atoms
• How many hydrogen atoms?
14
23
– 18(6.02 x 10 ) H atoms
• How many nitrogen atoms?
– 2(6.02 x 1023) N atoms
• How many oxygen atoms?
– 5(6.02 x 1023) O atoms
• How many total atoms?
– 39(6.02 x 1023) atoms
1mol of
C H18N2O5
How many carbon atoms would be
contained in 145g of aspartame?
• Remember that aspartame is C14H18N2O5 and
it has a gram formula mass of 294.0 g/mol.
How many carbon atoms would be contained
in 145g of aspartame (C14H18N2O5)?
4.16 x 1024 C atoms
How many grams of aspartame
contain 8.74 x 1022 oxygen atoms?
• Aspartame is C14H18N2O5 and it has a molar
mass of 294.0 g/mol.
How many grams of aspartame (C14H18N2O5)
contain 8.74 x 1022 oxygen atoms?
8.54 g of aspartame
Lab Activity
• Mole Worksheet 2
– Mole Worksheet 2 is a lab exercise.
– Notice that there is a front and a back to the
worksheet.
– The answers on the back have been given
however you need to show your work as factor
label problems to get credit.
– You and your lab partner need to turn in one
copy of the worksheet by the end of the period.