Concept explainers
How many atoms (or ions) of each element are in 140.0 g of the following substances?
(a)
Interpretation:
The number of atoms (or ions) present in
Explanation of Solution
For the number of formula units:
Here,
For the number of atoms or ions:
The number of formula units present is determined as follows:
Here,
The number of atoms is determined as follows:
By combining equations (1) and (2), the number of atoms can be determined as follows:
The molar mass of one mole of
Therefore, there are
(b)
Interpretation:
The number of atoms (or ions) of each element present in
Explanation of Solution
The molar mass of
There is one
There are two
Therefore, there are
(c)
Interpretation:
The number of atoms (or ions) of each element present in
Explanation of Solution
The molar mass of
There are two N in
There are two O ions in
Therefore, there are
(d)
Interpretation:
The number of atoms (or ions) of each element present in
Explanation of Solution
The molar mass of
There are 2
There is one
Therefore, there are
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Chapter 4 Solutions
INTRODUCTION TO CHEMISTRY-ACCESS
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