Concept explainers
Determine the number of moles in each substance.
a.
b.
c.
d.
(a)

Interpretation:
The number of moles of lead in
Concept introduction:
The mole concept provides the relation between moles, mass and molar mass. The mathematical expression of mole concept can be written as:
1 mole of any substance contains
Answer to Problem 93A
Explanation of Solution
Number of atoms =
1 mole =
Calculate moles:
(b)

Interpretation:
The number of moles of glucose in
Concept introduction:
The mole concept provides the relation between moles, mass and molar mass. The mathematical expression of mole concept can be written as:
1 mole of any substance contains
Answer to Problem 93A
Explanation of Solution
Number of molecules =
1 mole =
Calculate moles:
(c)

Interpretation:
The number of moles of sodium hydroxide in
Concept introduction:
The mole concept provides the relation between moles, mass and molar mass. The mathematical expression of mole concept can be written as:
1 mole of any substance contains
Answer to Problem 93A
Explanation of Solution
Number of formula units =
1 mole =
Calculate moles:
(d)

Interpretation:
The number of moles of copper (II) ionsin
Concept introduction:
The mole concept provides the relation between moles, mass and molar mass. The mathematical expression of mole concept can be written as:
1 mole of any substance contains
Answer to Problem 93A
Explanation of Solution
Number of ions =
1 mole =
Calculate moles:
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