Mole
Balanced
Conversions Equations
Stoich!!!
Chemical
Formulas
Potpourri
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Category #1 100
Find the mass of a
0.80 mole sample of
Ca(NO3)2.
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answer
Category #1 Question 200
Find the moles of
krypton (g) present in
a 4.8 liter container.
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answer
Category #1 Question 300
Calculate the
molar mass of
Pb(NO3)2.
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answer
Category #1 Question 400
Find the volume of
12.0 grams of radon
gas at STP.
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answer
Category #1 Question 500
How many Cl2
molecules are needed
to occupy a 2 liter
bottle at STP?
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answer
Category #2 Question 100
Balance the following equation:
CaF2
+
Al2(SO4)3
→
AlF3
+
CaSO4
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answer
Category #2 Question 200
Balance the following equation:
(NH4)2CO3
+
Ni(NO3)3

NH4NO3 +
Ni2(CO3)3
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answer
Category #2 Question 300
Balance the following equation:
C2H2 +
O2

CO2
+
H2O
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answer
Category #2 Question 400
2 HCl (aq)
+ Mg(OH)2 (s)  MgCl2 (aq) + 2 H2O (l)
If a person produces 0.050 mole of excess HCl in the
stomach, how many moles of Mg(OH)2 are needed to
neutralize this excess hydrochloric acid?
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answer
Category #2 Question 500
Given the following equation:
N 2 + 3 H2
 2 NH3
If 2 moles of nitrogen and 4 moles of
hydrogen are available, how much
ammonia could be produced?
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answer
Category #3 Question 100
H3PO4 + 3 NaOH -->
Na3PO4 + 3 H2O
How much 0.20 M H3PO4 is
needed to react with 100 ml.
of 0.10 M NaOH?
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answer
Category #3 Question 200
CaCO3 + 2 HCl -->
CaCl2 + H2O + CO2
How much 0.80 M HCl
would be needed to
dissolve a CaCO3 pearl
which weighs 4.0 grams?
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answer
Category #3 Question 300
Sea water is about 0.50 M NaCl.
To produce Cl2 gas, a company
evaporates sea water, melts the
NaCl, and runs electricity through
it.
2 NaCl --> 2 Na + Cl2
How many liters of sea water are
needed to fill a tank car with
1,120,000 liters of chlorine gas at
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answer
STP?
Category #3 Question 400
H3PO4 + 3 NaOH --> Na3PO4
+ 3 H2O
If 36.0 ml. of H3PO4 react
exactly with 80.0 ml. of 0.500 M
NaOH, what is the
concentration of the phosphoric
acid?
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answer
Category #3 Question 500
An experiment begun with 75ml of
0.2M Barium nitrate and 32ml of
0.6M Sodium Sulfate. After
collecting and drying the product,
3.45g of precipitate was obtained
in laboratory. Calculate the %
yield of the precipitate formed.
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answer
Category #4 Question 100
Iron (II) oxide
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answer
Category #4 Question 200
NH4C2H3O2
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answer
Category #4 Question 300
Sodium dichromate
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answer
Category #4 Question 400
Co(ClO4)2
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answer
Category #4 Question 500
Copper (II)
Sulfate
Pentahydrate
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answer
Category #5 Question 100
How many molecules
are in 200mL of 3M
methane gas (CH4)?
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answer
Category #5 Question 200
What is the total number
of moles of oxygen
atoms present in 1 mole
of Mg(ClO3)2?
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answer
Category #5 Question 300
At STP, 5.6 liter of CH4 contains
the same number of molecules
as
(1)
(2)
(3)
(4)
1.4 L of oxygen
5.6 L of hydrogen
2.8 L of ammonia
11.2 L of neon
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answer
Category #5 Question 400
What is the density
of Xenon gas at STP?
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answer
Category #5 Question 500
How many atoms of oxygen are
in 2 moles of carbon dioxide?
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answer
Category 1 Answer 100
Find the mass of a
0.80 mole sample of
Ca(NO3)2.
0.80 mol | 164 g
 131.2 g
| 1mole
Score Board
Category 1 Answer 200
Find the moles of
krypton (g) present in
a 4.8 liter container.
4.8 L | 1 mol
 0.21 moles
| 22.4 L
Score Board
Category 1 Answer 300
Calculate the
molar mass of
Pb(NO3)2.
331 g/mol
Score Board
Category 1 Answer 400
Find the volume of 12.0
grams of radon gas at STP.
12.0 g | 1 mol | 22.4 L
 1.2 L
| 222 g | 1 mol
Score Board
Category 1 Answer 500
How many Cl2 molecules are
needed to occupy a 2 liter
bottle at STP?
2 L | 1 mol | 6.02 x 1023 molecules
 5.4 x 1022 molecules
| 22.4 L | 1 mol
Score Board
Category 2 Answer 100
3 CaF2
+
Al2(SO4)3
→
2 AlF3
+
3 CaSO4
Score Board
Category 2 Answer 200
3 (NH4)2CO3 +
2 Ni(NO3)3
 6 NH4NO3 +
Ni2(CO3)3
Score Board
Category 2 Answer 300
2 C2H2
+
5 O2 
4 CO2 +
2 H2 O
Score Board
Category 2 Answer 400
2 HCl (aq)
+ Mg(OH)2 (s)  MgCl2 (aq) + 2 H2O (l)
If a person produces 0.050 mole of excess HCl in the
stomach, how many moles of Mg(OH)2 are needed to
neutralize this excess hydrochloric acid?
0.050 mol HCl | 1 Mg(OH)2
| 2 HCl
=
0.025 mol Mg(OH)2
Score Board
Category 2 Answer 500
Given the following equation:
N2 + 3 H2
 2 NH3
If 2 moles of nitrogen and 4 moles of hydrogen are available, how
much ammonia could be produced?
hydrogen is the limiting factor.
4 mol H2 | 2 mol NH3
 2.7 mol NH3
| 3 mol H2
Score Board
Category 3 Answer 100
H3PO4 + 3 NaOH --> Na3PO4 + 3
H2O
How much 0.20 M H3PO4 is needed to
react with 100 ml. of 0.10 M NaOH?
Score Board
Category 3 Answer 200
CaCO3 + 2 HCl --> CaCl2 + H2O
+ CO2
How much 0.80 M HCl would be
needed to dissolve a CaCO3 pearl
which weighs 4.0 grams?
Score Board
Category 3 Answer 300
Sea water is about 0.50 M NaCl. To
produce Cl2 gas, a company
evaporates sea water, melts the NaCl,
and runs electricity through it.
2 NaCl --> 2 Na + Cl2
How many liters of sea water are needed
to fill a tank car with 1,120,000 liters of
chlorine gas at STP?
Score Board
Category 3 Answer 400
H3PO4 + 3 NaOH --> Na3PO4 + 3
H2O
If 36.0 ml. of H3PO4 react exactly
with 80.0 ml. of 0.500 M NaOH,
what is the concentration of the
phosphoric acid?
Score Board
Category 3 Answer 500
An experiment begun with 75g of 0.2M
Barium nitrate and 32g of 0.6M
Sodium Sulfate. After collecting and
drying the product, 63.45g of
precipitate was obtained in laboratory.
Calculate the % yield of the
precipitate formed.
Score Board
Category 4 Answer 100
Iron (II) oxide
FeO
Score Board
Category 4 Answer 200
NH4C2H3O2
ammonium
acetate
Score Board
Category 4 Answer 300
Sodium dichromate
Na2Cr2O7
Score Board
Category 4 Answer 400
Co(ClO4)2
cobalt (II)
perchlorate
Score Board
Category 4 Answer 500
Copper (II)
Sulfate
Pentahydrate
CuSO4·5H2O
Score Board
Category 5 Answer 100
How many molecules are in 200mL of 3M
methane gas (CH4)?
3.61 x 10 ^ 23 molecules CH4
Score Board
Category 5 Answer 200
What is the total number of
moles of oxygen atoms present
in 1 mole of Mg(ClO3)2?
6 moles
Score Board
Category 5 Answer 300
At STP, 5.6 liter of CH4 contains
the same number of molecules
as
(2) 5.6 L of hydrogen
Score Board
Category 5 Answer 400
What is the density
of Xenon gas at STP?
131.29 g
g
m
d 

 5.86
V
22.4 L
L
Score Board
Category 5 Answer 500
How many atoms of oxygen are in 2
moles of carbon dioxide?
2.41 x 10 ^ 24 atomsO
Score Board
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