AnswersLA-Chemistry AIntroduction to Stoichiometry

Introduction to Stoichiometry Answers

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Review the equation below.2KClO3 2KCl + 3O2How many moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose?

Question illustration
A
1
B
2
C
3
D
6
2
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Consider the reaction below.2Al2O3 4Al + 3O2How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decomposed?

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A
17.7 mol
B
19.9 mol
C
39.8 mol
D
53.0 mol
3

Consider the reaction below.2H2 + O2 2H2OHow many moles of water are produced from 13.35 mol of oxygen?

Question illustration
A
6.675 mol
B
26.70 mol
C
53.40 mol
D
66.75 mol
4

The reaction below shows how silver chloride can be synthesized.AgNO3 + NaCl NaNO3 + AgClHow many moles of silver chloride are produced from 15.0 mol of silver nitrate?

Question illustration
A
1.0 mol
B
15.0 mol
C
30.0 mol
D
45.0 mol
5

Consider the reaction below.2H2O 2H2 + O2How many moles of hydrogen are produced when 6.28 mol of oxygen form?

Question illustration
A
3.14 mol
B
6.28 mol
C
12.6 mol
D
25.2 mol
6

The equation below shows hydrogen reacting with oxygen to produce water.2H2 + O2 2H2OIf 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

Question illustration
A
4.0 mol
B
8.0 mol
C
16 mol
D
32 mol
7

Consider the equation below.N2 + 3H2 2NH3What is the mole ratio of hydrogen to ammonia?

Question illustration
A
1:1
B
1:2
C
3:2
D
5:4
8

The balanced chemical equation for the reaction of hydrogen and oxygen is shown below.2H2 + O2 2H2OThe number of moles of hydrogen that is needed to produce 0.253 mol of water is

Question illustration
A
smaller than 0.253 mol.
B
much greater than 0.253 mol.
C
slightly greater than 0.253 mol.
D
equal to 0.253 mol.
9

The balanced chemical equation for the reaction of copper (Cu) and silver nitrate (AgNO3) is shown below.Cu + 2AgNO3 2Ag + Cu(NO3)2How many moles of copper must react to form 3.50 mol of Ag?

Question illustration
A
0.175 mol
B
1.75 mol
C
7.00 mol
D
17.0 mol
10

Consider the balanced equation below. What is the mole ratio of to Fe?

Question illustration
A
1:3
B
1:4
C
3:1
D
4:3

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