Concept explainers
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(a)
Interpretation:
Whether from the number of moles of each type of atom in a given sample of the compound the molecular formula can be obtained or not is to be explained. Also, a road map is to be drawn if the molecular formula can be obtained.
Concept introduction:
The molecular formula describes the chemical symbols and numeric subscripts indicating the exact number of atoms comprising the whole chemical compound. The molecular formula does not suggest about the
The empirical formula describes the simplest whole-integer ratio of atoms of the chemical compound. The molecular formula can either be similar to empirical formula otherwise it can be the multiple of the empirical formula.
(b)
Interpretation:
Whether from the mass
Concept introduction:
The molecular formula describes the chemical symbols and numeric subscripts indicating the exact number of atoms comprising the whole chemical compound. The molecular formula does not suggest about the chemical bonding of that particular compound.
The empirical formula describes the simplest whole-integer ratio of atoms of the chemical compound. The molecular formula can either be similar to empirical formula otherwise it can be the multiple of the empirical formula.
The expression to calculate the mass of an element from the mass
The expression for the calculation of the number of moles is as follows:
(c)
Interpretation:
Whether from the mass
Concept introduction:
The molecular formula describes the chemical symbols and numeric subscripts indicating the exact number of atoms comprising the whole chemical compound. The molecular formula does not suggest about the chemical bonding of that particular compound.
The empirical formula describes the simplest whole-integer ratio of atoms of the chemical compound. The molecular formula can either be similar to empirical formula otherwise it can be the multiple of the empirical formula.
The expression to calculate the mass of an element from the mass
The expression for the calculation of the number of moles is as follows:
(d)
Interpretation:
Whether from the empirical formula and mass
Concept introduction:
The molecular formula describes the chemical symbols and numeric subscripts indicating the exact number of atoms comprising the whole chemical compound. The molecular formula does not suggest about the chemical bonding of that particular compound.
The empirical formula describes the simplest whole-integer ratio of atoms of the chemical compound. The molecular formula can either be similar to empirical formula otherwise it can be the multiple of the empirical formula.
(e)
Interpretation:
Whether from the structural formula the molecular formula can be obtained or not is to be explained. Also, a road map is to be drawn if the molecular formula can be obtained.
Concept introduction:
The molecular formula describes the chemical symbols and numeric subscripts indicating the exact number of atoms comprising the whole chemical compound. The molecular formula does not suggest about the chemical bonding of that particular compound.
The empirical formula describes the simplest whole-integer ratio of atoms of the chemical compound. The molecular formula can either be similar to empirical formula otherwise it can be the multiple of the empirical formula.
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Chapter 3 Solutions
Chemistry The Molecular Nature Of Matter And Change 9th
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