
To find:
The number of carbon atoms in one molecule of (a) CH4; (b) C3H8; (c) C6H6; and (d) C6H12O6.

Answer to Problem 2.61QA
Solution:
(a) CH4:The number of carbon atoms is 1.
(b) C3H8: The number of carbon atoms is 3.
(c) C6H6: The number of carbon atoms is 6.
(d) C6H12O6: The number of carbon atoms is 6.
Explanation of Solution
1 mole = 6.022*1023 molecules.
a) CH4 – Here we can use Avogadro’s number as a conversion factor to calculate number of atoms in 1 molecule of CH4.
(b) C3H8 - Here we can use Avogadro’s number as a conversion factor to calculate number of atoms in 1 molecule of C3H8
(c) C6H6 - Here we can use Avogadro’s number as a conversion factor to calculate number of atoms in 1 molecule of C6H6.
(d) C6H12O6 - Here we can use Avogadro’s number as a conversion factor to calculate number of atoms in 1 molecule of C6H12O6.
Conclusion:
The number of carbon atoms can be calculated by using Avogadro’s number.
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Chapter 2 Solutions
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