Concept explainers
(a)
Interpretation:
A concept map is to be drawn and the liters of
Concept introduction:
A mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 18E
The concept map is shown below.
The liters of
Explanation of Solution
When
Figure 1
The formula to calculate the number of moles of
The mass of
The molar mass of
Substitute the mass and molar mass of
The volume occupied by
The formula to calculate the volume occupied by
Substitute the volume of
Therefore, the liters of
The liters of
(b)
Interpretation:
A concept map is to be drawn and the molecules of
Concept introduction:
A mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 18E
The concept map is shown below.
The molecules of
Explanation of Solution
When
Figure 1
The formula to calculate the number of moles of
The mass of
The molar mass of
Substitute the mass and molar mass of
The molecules present in
The formula to calculate the molecules occupied by
Substitute the molecules in
Therefore, the molecules of
The molecules of
(c)
Interpretation:
A concept map is to be drawn and molar concentration of the hydrazine solution in the solution in when
Concept introduction:
A mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 18E
The concept map is shown below.
The molar concentration of the hydrazine solution is
Explanation of Solution
When
Figure 1
The formula to calculate the number of moles of
The mass of
The molar mass of
Substitute the mass and molar mass of
The number of moles in
The formula to determine molarity is shown below.
Where
•
•
•
Substitute the value of number of moles and volume in equation (1).
The relation between
The unit factors are given below.
The unit factor to determine
Therefore,
Therefore, the molar concentration of
The molar concentration of
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Chapter 15 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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