Concept explainers
4-42 Calculate the formula weight of:
(a) KCl
(b) Na3PO4
(c) Fe(OH)2
(d) NaAl(SO3)2
(e) AL2(SO4)3
(f) (NH4)2CO3
(a)
Interpretation:
To calculate the formula weight for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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,
The formula mass is calculated as sum of 1 Sodium atom and 1 mole of Chlorine atoms.
Answer to Problem 4.42P
The formula weight of
= 74.5 amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 1 Potassium atom and 1 Chlorine atom.
(b)
Interpretation:
To calculate the formula weights for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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. -
The formula mass is calculated as sum of 1 Sodium atom and 1 mole of Chlorine atoms.
Answer to Problem 4.42P
The formula weight of
= 163 amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 3 Sodium atom and 1 Phosphorous atom and 4 oxygen atom.
(c)
Interpretation:
To calculate the formula weights for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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. -
The formula mass is calculated as sum of 1 Iron atom, 2 oxygen atoms and 2 Hydrogen atoms.
Answer to Problem 4.42P
The formula weight of
= 90amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 1 Iron atom, 2 oxygen atoms and 2 Hydrogen atoms.
(d)
Interpretation:
To calculate the formula weights for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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. -
The formula mass is calculated as sum of 1 Sodium atom and 1 mole of Chlorine atoms.
Answer to Problem 4.42P
The formula weight of
= 210 amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 1 Sodium atom, 1 Aluminium atom ,6 oxygen atoms and 2 Sulphur atoms.
(e)
Interpretation:
To calculate the formula weights for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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. -
The formula mass is calculated as sum of 1 Sodium atom and 1 mole of Chlorine atoms.
Answer to Problem 4.42P
The formula weight of
=342amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 2 Aluminium atom, 12 oxygen atoms and 3Sulfur atoms.
(f)
Interpretation:
To calculate the formula weights for
Concept Introduction:
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
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. -
The formula mass is calculated as sum of 1 Sodium atom and 1 mole of Chlorine atoms.
Answer to Problem 4.42P
The formula weight of
= 96amu.
Explanation of Solution
Formula mass is the sum of masses of the atoms present in a molecule. These compounds are those that do not generally occur as a single molecule. For e.g.
The formula mass is calculated as sum of 2Nitrogen atom, 8Hydrogen atom, 3 oxygen atoms and 1 Carbon atom.
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Chapter 4 Solutions
Introduction to General, Organic and Biochemistry
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