Conversion of Energy Units
The complete combustion of a small wooden match produces approximately 512 cal of heat. How many kilojoules (kJ) are produced?
Interpretation:
The heat (in kilojoules) that is produced during the complete combustion of a small wooden match is to be determined.
Concept introduction:
Unit conversion is defined as the process in which multiple steps are used to convert the unit of measurement of the same given quantity.
Answer to Problem 9.1YT
Solution:
Explanation of Solution
Given information: The complete combustion of a small wooden match produces approximately
As it is known, one calorie is equal to
Conversion factor cal to joul is as:
The amount of heat produced by combusting a small wooden match is
As it is known, 1 kilojoule is 1000 joules, hence conversion factor is as:
For converting heat into kilojoules, it is divided by
During the complete combustion of a small wooden match,
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Chapter 9 Solutions
Chemistry In Focus
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