Transcript the animated version

Let’s Play Hangman
What’s the Word?
• Based on the law of
conservation of mass, a balanced
chemical reaction allows you to
calculate back and forth, between
the mass and moles of reactants
and products.
STOICHIOMETRY
Law of Multiple Proportions
• John Dalton originated the
idea that when elements
combine, they do so in whole
number ratios.
1N2 + 3H2  2NH3
N
N
H H
H H
H H
H
H
N
H
N
H
H
H
Copyright 2011 CreativeChemistryLessons.com
Law of Multiple Proportions
Atoms combine in whole number ratios
2
_B + 3
_M + 1
_Ch  1_B2M3Ch
Copyright 2011 CreativeChemistryLessons.com
Law of Multiple Proportions
Atoms Combine in Whole Number Ratios
_F
1 + _W
2 + _H
1 +1
_P2  _FW
1
2HP2
Copyright 2011 CreativeChemistryLessons.com
Law of Conservation of Mass
• Matter cannot be created or destroyed
in any reaction, only rearranged, so
the number of reactant atoms MUST
EQUAL the number of product atoms.
1N2 + 3H2  2NH3
N
H
Copyright 2011 CreativeChemistryLessons.com
Magnesium Lab Results
• Magnesium reacts with Oxygen to
produce Magnesium Oxide.
2
_Mg
1
_O2
Mg
MgO
Mg
PLAY LAB VIDEO
2
_MgO
O
Copyright 2011 CreativeChemistryLessons.com
Magnesium Lab Results
• What happened to the mass of the
Magnesium after burning it?
• The mass increased.
• How can the Magnesium get
heavier after it is burned?
• Magnesium combined with
Oxygen to form a heavier
compound, Magnesium Oxide.
Copyright 2011 CreativeChemistryLessons.com
LESSON SUMMARY
 Identify
the Main Topic. Use my analogies.
The topic we learned in chemistry today
was __________, which is a lot like…
 Give
an example of the topic.
For instance, _____ is a good example of
the topic because…
 Explain
additional details of your example.
Furthermore, example shows the topic
because it portrays…
STOI-CANYON
Copyright 2011 CreativeChemistryLessons.com
STOI-CANYON
GRAMS
REACTANT 2
GRAMS
PRODUCT 2
GRAMS
REACTANT 1
GRAMS
PRODUCT 1
Copyright 2011 CreativeChemistryLessons.com
STOI-CANYON
MOLE
BRIDGE
MOLE
BRIDGE
MOLE
BRIDGE
MOLE
BRIDGE
Copyright 2011 CreativeChemistryLessons.com
STOI-CANYON
MOLE
RATIO
Copyright 2011 CreativeChemistryLessons.com
1CH4 + 2O2  1CO2 + 2H2O
GRAMS
REACTANT 2
MOLE
RATIO
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
GRAMS
REACTANT 1
Copyright 2011 CreativeChemistryLessons.com
STOI-CANYON
GRAMS
REACTANT
2
GRAMS
PRODUCT
2
MOLE
--------RATIO
GRAMS
REACTANT
1
Copyright 2011 CreativeChemistryLessons.com
GRAMS
PRODUCT
1
QUESTION #1
1. When 12 grams of Magnesium
reacts with Oxygen, how many
grams of Magnesium Oxide is
produced?
2Mg + 1O2  2MgO
SYNTHESIS REACTION
2Mg + 1O2  2MgO
GRAMS
REACTANT 2
GRAMS
REACTANT 1
2MgO
------2Mg
1. When 12 grams of
Magnesium reacts with
Oxygen, how many grams
of Magnesium Oxide is
produced?
Copyright 2011 CreativeChemistryLessons.com
GRAMS
PRODUCT 1
1. When 12 grams of Magnesium reacts with Oxygen, how
many grams of Magnesium Oxide is produced?
Stoi-Canyon
Use Mole Bridge to Find Moles
24g/mol
2Mg2MgO
12g
÷
?
= 0.5 moles Mg
Use Mole Ratio
Use Mole Bridge to Find Grams
2MgO
2Mg
40g/mol
= 0.5 moles MgO
?
x
0.5
mol
= 20 grams MgO
12 grams Mg  20 grams MgO
1. When 12 grams of Magnesium reacts with Oxygen, how
many grams of Magnesium Oxide is produced?
2Mg + 1O2  2MgO
Known
Molar Mass
Mole Ratio
Molar Mass
12g Mg
1mol
2MgO
40g
1
24g
2Mg
1mol
Copyright 2011 CreativeChemistryLessons.com
Answer
= 20g
MgO
QUESTION #2
2. How much Oxygen is needed to
produce 20 grams of Magnesium
Oxide?
2Mg + 1O2  2MgO
SYNTHESIS REACTION
2Mg + 1O2  2MgO
GRAMS
REACTANT 2
GRAMS
REACTANT 1
1O2
------2MgO
2. How much Oxygen
is needed to produce
20 grams of
Magnesium
Oxide?
Copyright
2011 CreativeChemistryLessons.com
GRAMS
PRODUCT 1
2. How much Oxygen is needed to produce 20 grams of
Magnesium Oxide?
Stoi-Canyon
Use Mole Bridge to Find Moles
40g/mol
2MgO1O2
20g
÷
?
= 0.5 moles MgO
Use Mole Ratio
Use Mole Bridge to Find Grams
1O 2
2MgO
32g/mol
= 0.25 moles O2
?
x
0.25
mol
= 8 grams O2
20 grams MgO  8 grams O2
2. How much Oxygen is needed to produce 20 grams of
Magnesium Oxide?
2Mg + 1O2  2MgO
Known
Molar Mass
Mole Ratio
Molar Mass
20g MgO
1mol
1O2
32g
1
40g
2MgO
1mol
Answer
= 8g
O2
QUESTION #3
3. How much Magnesium is needed
to completely react with 8 grams
of Oxygen to produce Magnesium
Oxide?
2Mg + 1O2  2MgO
SYNTHESIS REACTION
2Mg + 1O2  2MgO
GRAMS
REACTANT 2
GRAMS
REACTANT 1
2Mg
------1O2
3. How much
Magnesium is needed
to completely react
with 8 grams of
Oxygen?
GRAMS
PRODUCT 1
3. How much Magnesium is needed to completely react with
8 grams of Oxygen to produce Magnesium Oxide?
Stoi-Canyon
1O22Mg
Use Mole Bridge to Find Moles
32g/mol
8g
÷
?
= 0.25 moles O2
Use Mole Ratio
Use Mole Bridge to Find Grams
2Mg
1O 2
24g/mol
= 0.5 moles Mg
?
x
0.5
mol
= 12g Mg
8 grams O2  12 grams Mg
3. How much Magnesium is needed to completely react with
8 grams of Oxygen to produce Magnesium Oxide?
2Mg + 1O2  2MgO
Known
Molar Mass
Mole Ratio
Molar Mass
8g O2
1mol
2Mg
24g
1
32g
1O2
1mol
Answer
= 12g
Mg
QUESTION #4
4. When 84 grams of Nitrogen
reacts with Hydrogen, how
many grams of ammonia is
produced?
1N2 + 3H2  2NH3
SYNTHESIS REACTION
1N2 + 3H2  2NH3
GRAMS
REACTANT 2
GRAMS
REACTANT 1
2NH3
------1N2
4. When 84 grams of
Nitrogen reacts with
Hydrogen, how many
grams of ammonia is
Copyright 2011 produced?
CreativeChemistryLessons.com
GRAMS
PRODUCT 1
4. When 84 grams of Nitrogen reacts with Hydrogen, how
many grams of ammonia is produced?
Stoi-Canyon
1N22NH3
Use Mole Bridge to Find Moles
28g/mol
84g
÷
?
= 3 moles N2
Use Mole Ratio
Use Mole Bridge to Find Grams
2NH3
1N 2
17g/mol
= 6 moles NH3
?
x
6mol
= 102 grams NH3
84 grams N2  102 grams NH3
4. When 84 grams of Nitrogen reacts with Hydrogen, how
many grams of ammonia is produced?
1N2 + 3H2  2NH3
Known
Molar Mass
Mole Ratio
Molar Mass
84g N2
1mol
2NH3
17g
1
28g
1N2
1mol
Answer
= 102g
NH3
LESSON SUMMARY
 Identify
the Main Topic. Use my analogies.
The topic we learned in chemistry today
was __________, which is a lot like…
 Give
an example of the topic.
For instance, _____ is a good example of
the topic because…
 Explain
additional details of your example.
Furthermore, example shows the topic
because it portrays…
QUESTION #5
5. How many grams of
Methanol are produced when
56 grams of Carbon Monoxide
reacts with Hydrogen?
1CO + 2H2  1CH3OH
SYNTHESIS REACTION
1CO + 2H2  1CH3OH
GRAMS
REACTANT 2
1CH3OH
--------1CO
GRAMS
REACTANT 1
5. How many grams of
Methanol are produced
when 56 grams of
Carbon Monoxide
reacts with Hydrogen?
GRAMS
PRODUCT 1
5. How many grams of Methanol are produced when 56
grams of Carbon Monoxide reacts with Hydrogen?
Stoi-Canyon
Use Mole Bridge to Find Moles
28g/mol
1CO1CH3OH 56g
÷
?
= 2 moles CO
Use Mole Ratio
1CH3OH
1CO
= 2 moles CH3OH
Use Mole Bridge to Find Grams
32g/mol
?
x
2
mol
= 64 grams CH3OH
56 grams CO  64 grams CH3OH
5. How many grams of Methanol are produced when 56
grams of Carbon Monoxide reacts with Hydrogen?
1CO + 2H2  1CH3OH
Known
56g CO
1
Molar Mass
Mole Ratio
1mol 1CH3OH
28g
1CO
Molar Mass
32g
1mol
Answer
= 64g
CH3OH
QUESTION #6
6. How many grams of Sodium
Hydroxide is produced when
you react 60 93 grams of
Sodium Oxide with excess
Water?
1Na2O + 1H2O  2NaOH
SYNTHESIS REACTION
1Na2O + 1H2O  2NaOH
GRAMS
REACTANT 2
2NaOH
--------1Na2O
GRAMS
REACTANT 1
6. How many grams of
Sodium Hydroxide is
produced when you
react 93 grams of
Sodium Oxide with
excess Water?
GRAMS
PRODUCT 1
6. How many grams of Sodium Hydroxide is produced when
you react 93 grams of Sodium Oxide with excess Water?
Stoi-Canyon
Use Mole Bridge to Find Moles
62g/mol
1Na2O2NaOH
93g
÷
?
= 1.5 moles Na2O
Use Mole Ratio
Use Mole Bridge to Find Grams
2NaOH
1Na 2O
40g/mol
= 3 moles NaOH
?
x
3
mol
= 120 grams NaOH
93 grams Na2O  120 grams NaOH
6. How many grams of Sodium Hydroxide is produced when
you react 60 grams of Sodium Oxide with excess Water?
1Na2O + 1H2O  2NaOH
Known
Molar Mass
Mole Ratio
Molar Mass
93g Na2O
1mol
2NaOH
40g
1
62g
1Na2O
1mol
Answer
= 120g
NaOH
QUESTION #7
7. How many grams of Calcium
Carbonate are needed to make
14 grams of Calcium Oxide?
1CaCO3  1CaO + 1CO2
DECOMPOSITION REACTION
1CaCO3  1CaO + 1CO2
1CaCO3
--------1CaO
GRAMS
REACTANT 1
7. How many grams of
Calcium Carbonate are
needed to make 14
grams of Calcium Oxide?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
7. How many grams of Calcium Carbonate are needed to
make 14 grams of Calcium Oxide?
Stoi-Canyon
Use Mole Bridge to Find Moles
56g/mol
1CaO1CaCO3
14g
÷
?
= 0.25 moles CaO
Use Mole Ratio
1CaCO3
1CaO
Use Mole Bridge to Find Grams
100g/mol
?
x
0.25
mol
= 0.25 moles CaCO3 = 25 grams CaCO3
14 grams CaO  25 grams CaCO3
7. How many grams of Calcium Carbonate are needed to
make 14 grams of Calcium Oxide?
1CaCO3  1CaO + 1CO2
Known
Molar Mass
Mole Ratio
Molar Mass
14g CaO
1mol
1CaCO3
100g
1
56g
1CaO
1mol
Answer
= 25g
CaCO3
QUESTION #8
8. How many grams of Oxygen
are produced from the
decomposition of 105 grams of
Beryllium Sulfate?
1BeSO4  1BeS + 2O2
DECOMPOSITION REACTION
1BeSO4  1BeS + 2O2
2O2
--------1BeSO4
GRAMS
REACTANT 1
8. How many grams of
Oxygen are produced
from the decomposition
of 105 grams of
Beryllium Sulfate?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
8. How many grams of Oxygen are produced from the
decomposition of 105 grams of Beryllium Sulfate?
Stoi-Canyon
Use Mole Bridge to Find Moles
105g/mol
1BeSO42O2
105g
÷
?
= 1 mole BeSO4
Use Mole Ratio
Use Mole Bridge to Find Grams
2O 2
1BeSO 4
32g/mol
= 2 moles O2
?
x
2
mol
= 64 grams O2
105 grams BeSO4  64 grams O2
8. How many grams of Oxygen are produced from the
decomposition of 105 grams of Beryllium Sulfate?
1BeSO4  1BeS + 2O2
Known
Molar Mass
Mole Ratio
Molar Mass
105g BeSO4
1mol
2O2
32g
1
105g
1BeSO4
1mol
Answer
= 64g
O2
LESSON SUMMARY
 Identify
the Main Topic. Use my analogies.
The topic we learned in chemistry today
was __________, which is a lot like…
 Give
an example of the topic.
For instance, _____ is a good example of
the topic because…
 Explain
additional details of your example.
Furthermore, example shows the topic
because it portrays…
QUESTION #9
AVOGADRO STYLE
9. How much Chlorine gas is
produced by decomposing 36
grams of Calcium Chloride?
1CaCl2  1Ca + 1Cl2
DECOMPOSITION REACTION
1CaCl2  1Ca + 1Cl2
1Cl2
--------1CaCl2
GRAMS
REACTANT 1
9. How much Chlorine
gas is produced by
decomposing 36 grams
of Calcium Chloride?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
9. How much Chlorine gas is produced by decomposing
36 grams of Calcium Chloride?
Stoi-Canyon
Use Mole Bridge to Find Moles
110g/mol
1CaCl21Cl2
36g
÷
?
= 0.3 moles CaCl2
Use Mole Ratio
Use Mole Bridge to Find Grams
1Cl2
1CaCl2
70g/mol
= 0.3 moles Cl2
?
x
0.3
mol
= 21 grams O2
36 grams CaCl2  21 grams Cl2
9. How much Chlorine gas is produced by decomposing
36 grams of Calcium Chloride?
1CaCl2  1Ca + 1Cl2
Known
Molar Mass
Mole Ratio
Molar Mass
36g CaCl2
1mol
1Cl2
70g
1
110g
1CaCl2
1mol
Answer
= 21g
Cl2
QUESTION #10
10. When 680 grams of Silver
Nitrate reacts with
Magnesium, how many grams
of Silver are produced?
1Mg + 2AgNO3  1Mg(NO3)2 + 1Ag
SINGLE REPLACEMENT REACTION
1Mg + 2AgNO3  1Mg(NO3)2 + 1Ag
GRAMS
REACTANT 2
GRAMS
REACTANT 1
1Ag
--------2AgNO3
10. When 680 grams of
Silver Nitrate reacts with
Magnesium, how many
grams of Silver are
produced?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
10. When 680 grams of Silver Nitrate reacts with
Magnesium, how many grams of Silver are produced?
Stoi-Canyon
Use Mole Bridge to Find Moles
170g/mol
2AgNO31Ag
680g
÷
?
= 4 moles AgNO3
Use Mole Ratio
Use Mole Bridge to Find Grams
1Ag
2AgNO3
108g/mol
= 2 moles Ag
?
x
2
mol
= 216 grams Ag
680 grams AgNO3  216 grams Ag
10. When 680 grams of Silver Nitrate reacts with
Magnesium, how many grams of Silver are produced?
1Mg + 2AgNO3  1Mg(NO3)2 + 1Ag
Known
Molar Mass
680g AgNO3
1mol
1Ag
108g
1
170g
2AgNO3
1mol
Mole Ratio
Molar Mass
Answer
= 216g
Ag
QUESTION #11
11. How many grams of Titanium
Chloride are needed to produce
141 grams of Magnesium
Chloride?
2TiCl3 + 3Mg  3MgCl2 + 2Ti
SINGLE REPLACEMENT REACTION
2TiCl3 + 3Mg  3MgCl2 + 2Ti
GRAMS
REACTANT 2
GRAMS
REACTANT 1
2TiCl3
--------3MgCl2
11. How many grams of
Titanium Chloride are
needed to produce 141
grams of Magnesium
Chloride?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
11. How many grams of Titanium Chloride are needed to
produce 141 grams of Magnesium Chloride?
Stoi-Canyon
Use Mole Bridge to Find Moles
94g/mol
3MgCl22TiCl3
141g
÷
?
= 1.5 moles MgCl2
Use Mole Ratio
Use Mole Bridge to Find Grams
2TiCl3
3MgCl2
153g/mol
= 1 mole TiCl3
?
x
1
mol
= 153 grams TiCl3
141 grams MgCl2  153 grams TiCl3
11. How many grams of Titanium Chloride are needed to
produce 141 grams of Magnesium Chloride?
2TiCl3 + 3Mg  3MgCl2 + 2Ti
Known
Molar Mass
Mole Ratio
Molar Mass
141g MgCl2
1mol
2TiCl3
153g
1
94g
3MgCl2
1mol
Answer
= 153g
TiCl3
QUESTION #12
12. If 54 grams of water are
mixed with excess Magnesium
Nitride, then how many grams of
Ammonia are produced?
1Mg3N2 + 6H2O  2NH3 + 3Mg(OH)2
DOUBLE REPLACEMENT REACTION
1Mg3N2 + 6H2O  2NH3 + 3Mg(OH)2
GRAMS
REACTANT 2
GRAMS
REACTANT 1
3NH3
--------6H2O
12. If 54 grams of water
are mixed with excess
Magnesium Nitride, then
how many grams of
Ammonia are produced?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
12. If 54 grams of water are mixed with excess Magnesium
Nitride, then how many grams of Ammonia are produced?
Stoi-Canyon
Use Mole Bridge to Find Moles
18g/mol
6H2O2NH3
54g
÷
?
= 3 moles H2O
Use Mole Ratio
Use Mole Bridge to Find Grams
2NH3
6H 2O
17g/mol
= 1 mole NH3
?
x
1
mol
= 17 grams NH3
54 grams H2O  17 grams NH3
12. If 54 grams of water are mixed with excess Magnesium
Nitride, then how many grams of Ammonia are produced?
1Mg3N2 + 6H2O  2NH3 + 3Mg(OH)2
Known
Molar Mass
Mole Ratio
Molar Mass
54g H2O
1mol
2NH3
17g
1
18g
6H2O
1mol
Answer
= 17g
NH3
QUESTION #13
AVOGADRO STYLE
13. What mass of Hydrogen
Sulfate is needed to completely
react with 232 grams of Sodium
Chloride?
2NaCl + 1H2SO4  2HCl + 1Na2SO4
DOUBLE REPLACEMENT REACTION
2NaCl + 1H2SO4  2HCl + 2Na2SO4
GRAMS
REACTANT 2
GRAMS
REACTANT 1
1H2SO4
--------2NaCl
13. What mass of
Hydrogen Sulfate is
needed to completely
react with 232 grams of
Sodium Chloride?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
13. What mass of Hydrogen Sulfate is needed to completely
react with 232 grams of Sodium Chloride?
Stoi-Canyon
Use Mole Bridge to Find Moles
58g/mol
2NaCl1H2SO4
232g
÷
?
= 4 moles NaCl
Use Mole Ratio
1H 2SO 4
2NaCl
= 2 moles H2SO4
Use Mole Bridge to Find Grams
98g/mol
?
x
2
mol
= 196 grams H2SO4
232 grams NaCl  196 grams H2SO4
13. What mass of Hydrogen Sulfate is needed to completely
react with 232 grams of Sodium Chloride?
2NaCl + 1H2SO4  2HCl + 1Na2SO4
Known
Molar Mass
Mole Ratio
Molar Mass
232g NaCl
1mol
1H2SO4
98g
1
58g
2NaCl
1mol
Answer
= 196g
H2SO4
QUESTION #14
14. How many grams of Lithium
Hydroxide will react with 147
grams of Hydrogen Phosphate?
3LiOH + 1H3PO4  1Li3PO4 + 3H2O
DOUBLE REPLACEMENT REACTION
3LiOH + 1H3PO4  1Li3PO4 + 3H2O
GRAMS
REACTANT 2
GRAMS
REACTANT 1
3LiOH
--------1H3PO4
14. How many grams of
Lithium Hydroxide will
react with 147 grams of
Hydrogen Phosphate?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
14. How many grams of Lithium Hydroxide will react with
147 grams of Hydrogen Phosphate?
Stoi-Canyon
Use Mole Bridge to Find Moles
98g/mol
1H3PO43LiOH
147g
÷
?
= 1.5 moles H3PO4
Use Mole Ratio
Use Mole Bridge to Find Grams
3LiOH
1H3PO4
24g/mol
= 4.5 moles LiOH
?
x
4.5
mol
= 108 grams LiOH
232 grams H3PO4  108 grams LiOH
14. How many grams of Lithium Hydroxide will react with
147 grams of Hydrogen Phosphate?
3LiOH + 1H3PO4  1Li3PO4 + 3H2O
Known
Molar Mass
Mole Ratio
Molar Mass
147g H3PO4
1mol
3LiOH
24g
1
98g
1H3PO4
1mol
Answer
= 108g
LiOH
QUESTION #15
15. If 110 grams of Carbon Dioxide is
produced from combusting Butene,
then how many grams of Oxygen is
needed?
1C4H8 + 6O2  4CO2 + 4H2O
COMBUSTION REACTION
1C4H8 + 6O2  4CO2 + 4H2O
GRAMS
REACTANT 2
GRAMS
REACTANT 1
6O2
--------4CO2
15. If 110 grams of
Carbon Dioxide is
produced from
combusting Butene,
then how many grams
of Oxygen is needed?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
15. If 110 grams of Carbon Dioxide is produced from combusting
Butene, then how many grams of Oxygen is needed?
Stoi-Canyon
Use Mole Bridge to Find Moles
44g/mol
4CO26O2
110g
÷
?
= 2.5 moles CO2
Use Mole Ratio
Use Mole Bridge to Find Grams
6O 2
4CO 2
32g/mol
= 3.75 moles O2
?
x
3.75
mol
= 120 grams O2
110 grams CO2  120 grams O2
15. If 110 grams of Carbon Dioxide is produced from combusting
Butene, then how many grams of Oxygen is needed?
1C4H8 + 6O2  4CO2 + 4H2O
Known
Molar Mass
Mole Ratio
Molar Mass
110g CO2
1mol
6O2
32g
1
44g
4CO2
1mol
Answer
= 120g
O2
QUESTION #16
16. If 216 grams of Water is produced
from combusting Propane, then how
many grams of Carbon Dioxide is
also produced?
1C3H8 + 5O2  3CO2 + 4H2O
COMBUSTION REACTION
1C3H8 + 5O2  3CO2 + 4H2O
GRAMS
REACTANT 2
GRAMS
REACTANT 1
3CO2
--------4H2O
16. If 216 grams of
Water is produced from
combusting Propane,
then how many grams
of Carbon Dioxide is
also produced?
GRAMS
PRODUCT 2
GRAMS
PRODUCT 1
16. If 216 grams of Water is produced from combusting Propane,
then how many grams of Carbon Dioxide is also produced?
Stoi-Canyon
Use Mole Bridge to Find Moles
18g/mol
3CO24H2O
216g
÷
?
= 12 moles H2O
Use Mole Ratio
Use Mole Bridge to Find Grams
3CO 2
4H 2O
44g/mol
= 9 moles CO2
?
x
9
mol
= 396 grams CO2
232 grams H2O  396 grams CO2
16. If 216 grams of Water is produced from combusting Propane,
then how many grams of Carbon Dioxide is also produced?
1C3H8 + 5O2  3CO2 + 4H2O
Known
Molar Mass
Mole Ratio
Molar Mass
216g H2O
1mol
3CO2
44g
1
18g
4H2O
1mol
Answer
= 396g
CO2
LESSON SUMMARY
 Identify
the Main Topic. Use my analogies.
The topic we learned in chemistry today
was __________, which is a lot like…
 Give
an example of the topic.
For instance, _____ is a good example of
the topic because…
 Explain
additional details of your example.
Furthermore, example shows the topic
because it portrays…