
Concept explainers
Interpretation:
This is to be explained that all the measurements are uncertain.
Concept introduction:
The term accuracy is mostly used for the difference between a measured result and the actual exact result.

Answer to Problem 1RQ
For certain calculation, there is a chance to have the difference between the calculated value and actual values. Hence, all measurements are uncertain.
Explanation of Solution
Most instruments also have a degree of accuracy and student can be sure of how accurate something is up to that degree. A ruler has a degree of accuracy down to a millimeter in which one make a guess between values of millimeters.
For any experiment, there is some error that can be possible which results the answer to vary from the true value that means uncertainty occurred.
Chapter 5 Solutions
World of Chemistry, 3rd edition
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