Conversions
Conversion
s Take 2
Formulas
Formulas
Take 2
Definitions
Molar Mass
$200
$200
$200
$200
$200
$200
$400
$400
$400
$400
$400
$400
$600
$600
$600
$600
$600
$600
$800
$800
$800
$800
$800
$800
$1000
$1000
$1000
$1000
$1000
$1000
Stoich
Stoich
Take 2
Lim/Exc
React
Lim/Exc
React II
The Mole
Grab Bag
$400
$400
$400
$400
$400
$400
$800
$800
$800
$800
$800
$800
$1200
$1200
$1200
$1200
$1200
$1200
$1600
$1600
$1600
$1600
$1600
$1600
$2000
$2000
$2000
$2000
$2000
$2000
Final Jeopardy
Final Jeopardy
Category
Final Jeopardy
answer
question
$200
1,230 grams
15.4 moles of Br = _____ grams
$400
26.53 moles NaCl
2,004 grams NaCl=___ moles
$600
1.55 x 1024 formula units
.257 moles KCl= ___ formula
units
$800
5.2 x 1022 atoms Cu
5.5 grams Cu= ____ atoms Cu
$1000
3.37 x 1024 molecules
How many molecules of
water (H2O) have you drank
if you drink 101 grams?
$200
0.901 moles H2
1.82 grams H2= _____ moles
$400
920 grams
4.4 moles BaCl2= __ grams
$600
2 x 1024 molecules
3 moles C6H12O6= ___
molecules
$800
22.1 grams Li
1.33 x
25
10
atoms Li= ___
grams
$1000
1.03 x 1024 formula units
If you have 127 grams of
KCl, how many formula units
do you have?
$200
CH2O
If the molecular formula of a
compound is C3H6O3, what is
the empirical formula?
$400
H2O2
What is the molecular
formula of a substance with a
molar mass of 34 and an
empirical formula of HO?
$600
CH3O
What is the empirical formula
of a substance with 1.388g C,
0.345g H and 1.850g O?
$800
Cr2O3
What is the empirical formula
of a substance with 68.4% Cr,
31.6% O?
$1000
N2O4
What is the molecular
formula of a substance with
0.606g N and 1.390g O and a
molar mass of 92?
$200
CO, or C2O2, or C3O3, or C4O4, etc
If the empirical formula of a
compound is CO, what is a
possible molecular formula?
$400
C2H6O2
What is the molecular
formula of a substance with a
molar mass of 62 and an
empirical formula of CH3O?
$600
AgNO3
What is the empirical formula
of a substance with 63.5g Ag,
8.2g N and 28.3g O?
$800
Au2O3
What is the empirical formula
of a substance with 89.14%
Au and 10.80% O?
$1000
N2O5
What is the molecular
formula of a substance with
4.04g N and 11.46g O that
has a molar mass of 108.0?
$200
Most reduced version of chemical formula
Describe what an empirical
formula is
$400
The reactant that limits the amount of
product produced, runs out first
Describe what the limiting
reactant is
$600
Chemical formula of compounds as they
naturally occur, can be reduced
Describe what a molecular
formula is
$800
Grams (molar mass), liters (22.4), particles
(Avogadro’s Number), mole-mole
(coefficients)
Give two of the four
conversions that can be made
from a mole and the numbers
used to make such
conversions
$1000
Dozen and mole are counting units,
dozen=12, mole= 6.02 x 1023
Explain the connection
between a mole and a dozen.
How are the similar and how
do they differ?
$200
16 g/mol
What is the molar mass of
Oxygen?
$400
36.46 g/mol
What is the molar mass of
HCl?
$600
N5O2, 102.05 g/mol
What is the molar mass of
pentanitrogen dioxide?
$800
CuCl2, 134.45 g/mol
What is the molar mass of
copper (II) chloride?
$1000
91.95 g/mol
What is the molar mass of
Fe(NH4)2?
$400
1:3; 1 mole N2: 3 mole H2
N2 + 3 H2 ---> 2 NH3
What is the mole ratio of N2
to H2?
$800
10 moles H2O
2 H2 + O2 ---> 2 H2O
How many moles of H2O are
produced when 5.00 moles of
oxygen are used?
$1200
162 L O2
2 H2 + O2 ---> 2 H2O
How many liters of O2 will
react with 14.5 moles of H2?
$1600
25.0 moles CO2
Fe2O3 + 3CO --> 2Fe + 3 CO2
A student starts with 700.
grams of CO, how many moles
of CO2 should be produced?
$2000
125 grams SO3
2 SO2 + O2 ---> 2 SO3
A student starts with 100.
grams of SO2, how many
grams of SO3 should be
produced?
$400
3:2; 3 moles H2: 2 moles NH3
N2 + 3 H2 ---> 2 NH3
What is the mole ratio of H2
to NH3 ?
$800
1.50 moles O2
2 H2 + O2 ---> 2 H2O
If 3.00 moles of H2O are
produced, how many moles
of oxygen must be consumed
$1200
10.3 moles NH3
N2 + 3 H2 ---> 2 NH3
How many moles of NH3 will
be produced if you start with
115 liters of N2?
$1600
678 grams CO2
Fe2O3 + 3CO --> 2Fe + 3 CO2
A student starts with 15.4
moles of CO, how many grams
of CO2 should be produced?
$2000
317 grams H2O
4 NH3 + 3 O2 --> 2 N2 + 6 H2O
A student starts with 200.
grams of NH3, how many
grams of H2O should be
produced?
$400
Convert all reactants to one product,
compare numbers, lowest number shows
which is the limiting reactant
How do you determine which
reactant is the limiting
reactant?
$800
$1200
$1600
O2 limiting reactant, 0.0860 moles H2O
C3H8 + 5 O2  3CO2 + 4 H2O
What is the theoretical yield of
H2O in moles if you start with 14.8
g C3H8 and 3.44 g O2?
$2000
0.555 moles C3H8
C3H8 + 5 O2  3CO2 + 4 H2O
Given the following information, how
many moles of the excess reactant is
left over?
C3H8 : 4.33 moles H2O
O2 : 2.11 moles H2O
$400
Subtract limiting product # from excess
product #, convert this product number
back to excess reactant
How do you determine how
much excess reactant is left
over?
$800
$1200
$1600
Fe limiting reactant, 0.162 moles Al
4Al2O3 + 9Fe -> 3Fe3O4 + 8Al
What is the theoretical yield of Al
in moles if you start with 25.4 g
Al2O3 and 10.2 g Fe?
$2000
1.8 moles Fe
4Al2O3 + 9Fe -> 3Fe3O4 + 8Al
Given the following information, how
many moles of the excess reactant is
left over?
Al2O3: 1.88 moles Al
Fe: 3.48 moles Al
$400
Periodic table, determine the molar mass
When making mole
conversions concerning
grams, how is conversion
determined?
$800
Balanced equation
When completing mole to
mole conversions how are
values determined?
$1200
Avogadro’s number, 6.02 x 1023
When completing mole
conversions involving numbers
of particles, how are values
determined?
$1600
Gas constant, 22.4 Liters
When completing mole
conversions involving gas
stoichiometry, how are values
determined?
$2000
Back page of study guide
Sketch out a flow chart of
possible conversions
involving moles.
$400
Units will cancel if opposite of each other,
all units should cancel out besides desired
unit, multiply top numbers and divide
bottom numbers
State one rule for making unit
conversions.
$800
Dimensional Analysis
What is the process of
converting one unit to another
unit called?
$1200
answer
question
$1600
answer
question
$2000
answer
question