Concept explainers
(a)
Interpretation:
The molecular formula of butyric acid needs to be determined.
Concept Introduction :
Molecular formula of a compound can be calculated from its structure from total
(b)
Interpretation:
The empirical formula of butyric acid needs to be determined.
Concept Introduction :
The empirical formula is simplest ratio of number of atoms present in the molecule.
(c)
Interpretation:
The mass percent composition of butyric acid needs to be determined.
Concept Introduction :
The mass percent composition means mass percent of each atom present in butyric acid. This can be calculated by taking percent ratio of mass of that
(d)
Interpretation:
The mass of carbon atom in 0.850 g of butyric acid needs to be determined.
Concept Introduction :
The number of moles can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
(e)
Interpretation:
The mass of butyric acid needs to be calculated if the number of oxygen atom is
Concept Introduction :
In 1 mol of any substance there are
Here, m is mass and M is molar mass.
(f)
Interpretation:
The density of butyric acid is 0.959 g/mL at
Concept Introduction :
The density is related to mass and volume as follows:
Here, m is mass and V is volume.
Also, number of moles can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
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Basic Chemistry
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