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
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
In the
Similarly, the number of sulfate ions is calculated as follows.
Therefore, there are
The total number of barium and sulfate ions in
(b)
Interpretation:
The number of atoms (or ions) of each element present in
Explanation of Solution
The molar mass of one mole of
In the
Similarly, the number of phosphate ions is calculated as follows.
Therefore, there are
The total number of potassium and bromide ions in
(c)
Interpretation:
The number of atoms of each element present in
Explanation of Solution
The molar mass of two moles of
Therefore, there are
(d)
Interpretation:
The number of ions of each element present in
Explanation of Solution
The molar mass of one mole of
In the
Similarly, the number of sulfate ions is calculated as follows.
Therefore, there are
The total number of potassium and bromide ions in
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Chapter 4 Solutions
EBK INTRODUCTION TO CHEMISTRY
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