Mole Conversions

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Chapter 8

• Mole Conversions
• Part 1

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How many moles are in 12.3 g of uranium?
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How many moles are in 12.3 g of uranium?
12.3 g mol U
0.0517 mol U
238.0 g
4
How many grams are in 3.39 mol of table salt,
NaCl?
5
How many grams are in 3.39 mol of table salt,
NaCl?
3.39 mol NaCl 58.5 g
198 g NaCl
mol
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How many atoms are in 5.2 mol of Cu
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How many atoms are in 5.2 mol of Cu
5.2 mol Cu 6.02 x 1023 Cu atoms
3.1 x 1024 Cu atoms
mol Cu
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How many moles are in 9.76 x 1024 molecules of
sulfuric acid, H2SO4?
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How many moles are in 9.76 x 1024 molecules of
sulfuric acid, H2SO4?
9.76 x 1024 H2SO4 molecules mol H2SO4
6.02 x 1023 H2SO4 molecules
16.2 mol H2SO4
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Some gaseous elements are composed of atoms
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Other gaseous elements are composed of molecules
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Many Gaseous elements are diatomic
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Diatomic Molecules
Hydrogen (H2)
Fluorine (F2)
Oxygen (O2)
Nitrogen (N2)
Chlorine (Cl2)
Bromine (Br2)
Iodine (I2)
H2 O2 N2 Cl2 F2 I2 Br2
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(No Transcript)
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How can you tell which gaseous elements are atoms
and which are diatomic molecules?
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Diatomic Molecules
Hydrogen (H2)
Fluorine (F2)
Oxygen (O2)
Nitrogen (N2)
Chlorine (Cl2)
Bromine (Br2)
Iodine (I2)
H2 O2 N2 Cl2 F2 I2 Br2
H O N Cl F I Br
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Find the mass of 3.26 x 1028 molecules of O2
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Find the mass of 3.26 x 1028 molecules of O2
3.26 x 1028 O2 molecules
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Find the mass of 3.26 x 1028 molecules of O2
3.26 x 1028 O2 molecules mol O2
6.02 x 1023 O2 molecules
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Find the mass of 3.26 x 1028 molecules of O2
3.26 x 1028 O2 molecules mol O2
32.0 g
6.02 x 1023 O2 molecules mol O2
1.73 x 106 g O2
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• Prozac, C17H18F3NO, is an antidepressant in a
  group of drugs called selective serotonin
  reuptake inhibitors (SSRIs). Prozac affects
  chemicals in the brain that may become unbalanced
  and cause depression, panic, anxiety, or
  obsessive-compulsive symptoms. Find its molar
  mass.

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• Prozac, C17H18F3NO, is an antidepressant in a
  group of drugs called selective serotonin
  reuptake inhibitors (SSRIs). Prozac affects
  chemicals in the brain that may become unbalanced
  and cause depression, panic, anxiety, or
  obsessive-compulsive symptoms. Find its molar
  mass.

17(12.0) 18(1.0) 3(19.0) 14.0 16.0
309.0g/mol
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO
day
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g
day mg
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g mol
day mg 309.0 g
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g mol 7 days
day mg 309.0 g week
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g mol 7 days
4.53 x 10 - 4 mol/week
day mg 309.0 g week
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g mol 7 days
4.53 x 10 - 4 mol/week
day mg 309.0 g week
How many atoms of C would the patient consume in
one week?
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• The recommended starting dose of prozac is
• 20.0 mg each day.
• How many moles of prozac would a patient starting
  prozac take in one week?

20.0 mg C17H18F3NO 0.001g mol 7 days
4.53 x 10 - 4 mol/week
day mg 309.0 g week
How many atoms of C would the patient consume in
one week?
4.53 x 10-4 mol C17H18F3NO 6.02 x 1023 molecules
17 atoms C
mol molecule
4.64 x 1021 C atoms
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Information for Upcoming Mole Quiz

• How does a mole relate to particles and mass?
  (example One mole of H2O is 6.02 x 1023 H2O
  molecules and has a mass of 18g).
• Be able to use this information in factor-label
  problems.
• Know how to determine the number of atoms in a
  molecule. Be able to use this information in
  factor-label problems.
• Be able to determine the number of
  grams/molecule.
• Identify the diatomic gases.
• Do metric conversions.

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Homework

• Worksheet Mole Conversions (There is a front
  and back to this worksheet).