Calculate (to the nearest 0.1 u) the formula mass of these compounds:
- (a) glucose, C6H12O6
- (b) sucrose, C12H22O11
- (c) azithromycin, C38H72N2O12
(a)
Answer to Problem 4E
Explanation of Solution
Formula mass of any compound is given as the sum of the atomic masses of the constituent atoms given in the chemical formula of a substance. Formula mass and atomic mass are abbreviated as FM and AM respectively.
The formula mass of glucose
Atomic mass (AM) of carbon atom is
Atomic mass (AM) of hydrogen atom is
Atomic mass (AM) of oxygen atom is
Substitute
Conclusion:
Therefore, the formula mass of glucose
(b)
Answer to Problem 4E
Explanation of Solution
Formula mass of any compound is given as the sum of the atomic masses of the constituent atoms given in the chemical formula of a substance. Formula mass and atomic mass are abbreviated as FM and AM respectively.
The formula mass of sucrose
Atomic mass (AM) of carbon atom is
Atomic mass (AM) of hydrogen atom is
Atomic mass (AM) of oxygen atom is
Substitute
Conclusion:
Therefore, the formula mass of sucrose
(c)
Answer to Problem 4E
Explanation of Solution
Formula mass of any compound is given as the sum of the atomic masses of the constituent atoms given in the chemical formula of a substance. Formula mass and atomic mass are abbreviated as FM and AM respectively.
The formula mass of azithromycin
Atomic mass (AM) of carbon atom is
Atomic mass (AM) of hydrogen atom is
Atomic mass (AM) of oxygen atom is
Atomic mass (AM) of nitrogen atom is
Substitute
Conclusion:
Therefore, the formula mass of azithromycin
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Chapter 12 Solutions
An Introduction to Physical Science
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- An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning