Moles and
Stoichiometry Jeopardy
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Final Jeopardy
Grams ⟷
Moles
Atoms ⟷
Moles
Stoichiometry
Empirical/
Molecular
Formula
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Percent
Composition
How many moles
are in 2.50g of
Carbon?
0.21 mol C
How many grams
of Au are in 3.38
moles of Au?
666g Au
How many moles
of CH4 are in 0.76
grams of the
compound?
0.047 mol CH4
How many grams
of HClO4 are in 5.05
moles of the
compound?
507g HClO4
How many grams
are in 0.4102 moles
of AgNO3?
69.69 mol AgNO3
How many atoms
are in 4.8 mol HCl?
24
2.9x10 atoms
HCl
How many moles
of C4H4 are in 152
atoms?
-22
2.52x10
mol C4H4
How many atoms
are in 4.63 moles of
HBr?
24
2.79x10
atoms HBr
How many atoms
are in 4.734 moles
of NaCl?
24
2.850x10
atoms HCl
How many moles
are in 73,839 atoms
of PI3?
-19
1.2266x10
mol PI3
2H2 + O2  2H2O
How many grams of
O2 are needed to fully
react 4.5g of H2?
36g O2
2Al + 3Cl2  2AlCl3
When 80g Al react
with Chlorine gas,
how many grams of
AlCl3 are produced?
400g AlCl3
2Al + 3CuSO4 
Al2(SO4)3 + 3Cu
How many grams of
Aluminum Sulfate are
produced if 74.44g of CuSO4
are reacted with an excess of
Al?
53.23g Al2(SO4)3
2NaClO3  2NaCl + 3O2
How many grams of
O2 are produced if 12
moles of NaClO3 are
decomposed?
580g O2
3Cu + 8HNO3 
3Cu(NO3)2 + 2NO + 4H2O
How many grams of
HNO3 are needed to
dissolve 11.45g Cu?
30.31g HNO3
What is the empirical
formula of a
compound
containing...
60.0% Sulfur
40.0% Oxygen
SO3
What is the empirical formula
of a compound containing...
38.8% Carbon
16.2% Hydrogen
45.1% Nitrogen
CH5N
An unknown compound is
found to contain 40.0%
Carbon, 6.7% Hydrogen,
and 53.3% Oxygen. With a
molecular mass of 60.0g/mol,
what is the molecular
formula of the unknown
compound?
C2H4N2
A compound is found to
contain 24.8% Carbon, 2.0%
Hydrogen, and 73.2%
Chlorine. With a molecular
mass of 96.9g/mol, what is the
molecular formula?
C2H2Cl2
A compound is found to contain 39.10%
Carbon, 7.67% Hydrogen, 26.11%
Oxygen, 16.82% Phosphorus, and
10.30% Fluorine. If the molecular mass
is 184.1g/mol, what is the molecular
formula? Good luck.
C6H14O3PF
What is the percent
composition of
Hydrogen in the
compound H2O?
11.21%
What is the percent
composition of
Carbon in the
compound C6H12O6?
39.99%
What is the percent
composition of
every element in
H2SO4?
Hydrogen: 2.06%
Sulfur: 32.69%
Oxygen: 65.25%
What is the percent
composition in
every element of
Zn(NO3)2?
Zinc: 34.52%
Nitrogen: 14.79%
Oxygen: 50.68%
What is the percent
composition of
every element in
the compound
C12H22O11?
Carbon: 42.10%
Hydrogen: 6.49%
Oxygen: 51.41%
Final
Jeopardy
Make your wager
A mysterious new compound, found
only in the coolest of humans, has been
discovered, called Awesome (Aw). Ms.
Madigan contains 123.45mol Aw. How
many grams of Aw does Ms. Madigan
contain if Aw has an atomic mass of
38.34g?
4,733.1g Aw
*the average human contains roughly 2,000 g Aw