AnswersSY2026-27 - 2003340 Chemistry 1 Sem 2 CRWriting and Balancing Chemical Equations

Limiting Reactant and Percent Yield Answers

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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?

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A
4.0 mol
B
8.0 mol
C
16 mol
D
32 mol
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Consider the balanced equation below.4NH3 + 3O2 2N2 + 6H2O What is the mole ratio of NH3 to N2?

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A
2:4
B
4:2
C
4:4
D
7:2
3

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
4

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

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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.
5

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?

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A
1.0 mol
B
15.0 mol
C
30.0 mol
D
45.0 mol
6

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

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A
1
B
2
C
3
D
6
7

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
8

The balanced equation below shows the products that are formed when butane (C4H10) is combusted. 2C4H10 + 13O2 8CO2 + 10H2OWhat is the mole ratio of butane to carbon dioxide?

Question illustration
A
2:8
B
1:5
C
13:8
D
13:10
9

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
10

The following balanced equation shows the formation of water.2H2 + O2 2H2OHow many moles of oxygen (O2) are required to completely react with 27.4 mol of H2?

Question illustration
A
6.8 mol
B
13.7 mol
C
54.8 mol
D
109.6 mol

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