Concept explainers
4-43 Calculate the molecular weight of:
(a) Sucrose, C12H22O11
(b) Glycine, C2H5NO2
(C) DDT, C14H9Cl5
(a)
Interpretation:
To determine the molecular weight of the compound sucrose
Concept Introduction:
Molecular weight is the sum of masses of the atoms present in a molecule.
When we calculate the sum of masses of the elements present in a compound in 1 mole, we calculate it for the Avogadro number, molar mass comes out in grams.
For e.g. -
Molecular weight is calculated as sum of 2 Hydrogen atoms and 1 Oxygen atom.
Answer to Problem 4.43P
The Molecular weight of sucrose
= 342amu.
Explanation of Solution
Molecular weight is the sum of masses of the atoms present in a molecule.
Sucrose
Molecular weight is calculated as:
(b)
Interpretation:
To determine the masses of the compound glycine
Concept Introduction:
Molecular weight is the sum of masses of the atoms present in a molecule.
When we calculate the sum of masses of the elements present in a compound in 1 mole, we calculate it for the Avogadro number, molar mass comes out in grams.
For e.g. -
Molecular weight is calculated as sum of 2 Hydrogen atoms and 1 Oxygen atom.
Answer to Problem 4.43P
The Molecular weight of glycine,
=75amu.
Explanation of Solution
Molecular weight is the sum of masses of the atoms present in a molecule.
Glycine
Molecular weight is calculated as:
(c)
Interpretation:
To determine the masses of the compound DDT,
Concept Introduction:
Molecular weight is the sum of masses of the atoms present in a molecule.
When we calculate the sum of masses of the elements present in a compound in 1 mole, we calculate it for the Avogadro number, molar mass comes out in grams.
For e.g. -
Molecular weight is calculated as sum of 2 Hydrogen atoms and 1 Oxygen atom.
Answer to Problem 4.43P
The Molecular weight of DDT,
= 354.5 amu.
Explanation of Solution
Molecular weight is the sum of masses of the atoms present in a molecule.
DDT,
Molecular weight is calculated as:
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Chapter 4 Solutions
OWLv2 for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th Edition, [Instant Access], 1 term (6 months)
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