Question 1
Stoichiometry is the area of chemistry that looks at the numerical relationships among the amounts of reactants and products in a chemical reaction.
True
False
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Question 2
Using stoichiometry we can calculate the amount of one reactant needed to completely combine with another reactant or the amount of product that can be formed from a specified amount of initial reactant.
True
False
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Question 3
The coefficients in a balanced chemical equation give mole ratios that can be used as conversion factors.
True
False
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Question 4
Stoichiometry problems are standard dimensional analysis problems using a conversion factor from the balanced equation.
True
False
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Question 5
When doing stoichiometry problems the mole ratio conversion factors must line up so that all moles cancel except for the moles that you are looking for.
True
False
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Question 6
Consider the following reaction:
Fe
2
O
3
(s) + 3CO(g) → 2Fe(l) + 3CO
2
(g)
where iron oxide is reacting with carbon monoxide yielding iron and carbon dioxide. How many moles of iron oxide are needed to react with 1.5 moles of carbon monoxide?
3 moles
2 moles
3 moles
1 mole
0.5 moles
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Question 7
Consider the following reaction:
Fe
2
O
3
(s) + 3CO(g) → 2Fe(l) + 3CO
2
(g)
where iron oxide is reacting with carbon monoxide yielding iron and carbon dioxide. How many moles of carbon monoxide are needed to react with 1.5 moles of iron oxide?
6.5 moles
4.5 moles
2.5 moles
1.5 moles
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Question 8
Consider the following reaction:
Fe
2
O
3
(s) + 3CO(g) → 2Fe(l) + 3CO
2
(g)
where iron oxide is reacting with carbon monoxide yielding iron and carbon dioxide. How many moles of carbon monoxide are needed to yield 1.5 moles of iron?
2.25 moles
1.25 moles
0.25 moles
0.15 moles
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Question 9
Consider the following reaction:
Fe
2
O
3
(s) + 3CO(g) → 2Fe(l) + 3CO
2
(g)
where iron oxide is reacting with carbon monoxide yielding iron and carbon dioxide. How many moles of carbon dioxide will be produced if 2 moles of carbon monoxide are used?
4 moles
3 moles
2 moles
1 mole
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Question 10
Consider the following reaction:
Fe
2
O
3
(s) + 3CO(g) → 2Fe(l) + 3CO
2
(g)
where iron oxide is reacting with carbon monoxide yielding iron and carbon dioxide. How many moles of iron will be produced for every ten moles of iron oxide used?
20 moles
10 moles
2 moles
1 mole
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Question 11
Consider the following reaction:
N
2
(g) + 3H
2
(g) → 2NH
3
(g)
How many moles of N
2
are needed to react with 2 moles of H
2
?
6.00 moles
1.50 moles
0.67 moles
0.15 moles
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Question 12
Consider the following reaction:
N
2
(g) + 3H
2
(g) → 2NH
3
(g)
How many moles of H
2
are needed to react with 2 moles of N
2
?
6.00 moles
1.50 moles
0.67 moles
0.19 moles
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Question 13
Consider the following reaction:
N
2
(g) + 3H
2
(g) → 2NH
3
(g)
How many grams of N
2
are needed to react with 2 moles of H
2
?
84.0 grams
24.0 grams
18.7 grams
14.2 grams
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Question 14
Consider the following reaction:
N
2
(g) + 3H
2
(g) → 2NH
3
(g)
How many moles of N
2
are needed to produce 4 moles of NH
3
?
4 moles
2 moles
1 moles
0.5 moles
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Question 15
Consider the following reaction:
N
2
(g) + 3H
2
(g) → 2NH
3
(g)
How many grams of NH
3
are produced when 6 moles of H
2
are used up?
136 grams
68 grams
34 grams
17 grams
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