a)
Interpretation : The number of significant figures in the given measurement is to be determined.
Concept Introduction : The known digits plus the last estimated digit make up the significant figures in a measurement.
a)
Answer to Problem 5SP
The number of significant figures is 3.
Explanation of Solution
The known digits plus the last, estimated digit make up the significant figures in a measurement.
There is a set of rules to detect the digits in a significant measured value. The rules are as follows:
- It is assumed that every nonzero digit in a given measurement is significant.
- Zeros that come in between nonzero numbers are significant.
- The leftmost zeros that exist before nonzero digits are not significant.
- A zero following a decimal point and to the right of it are both always significant.
- Zeros that are to the left of an understandable decimal point at the rightmost end of measurement are not significant.
- In some cases, a number may have an infinite number of significant figures.
The given measurement is ]
According to rule 1, the significant figure is 3.
b)
Interpretation : The number of significant figures in the given measurement is to be determined.
Concept Introduction : The known digits plus the last, estimated digit make up the significant figures in a measurement.
b)
Answer to Problem 5SP
The number of significant figures is 2.
Explanation of Solution
The known digits plus the last, estimated digit make up the significant figures in a measurement.
There is a set of rules to detect the digits in a significant measured value. The rules are as follows:
- It is assumed that every nonzero digit in a given measurement is significant.
- Zeros that come in between nonzero numbers are significant.
- The leftmost zeros that exist before nonzero digits are not significant.
- A zero following a decimal point and to the right of it are both always significant.
- Zeros that are to the left of an understandable decimal point at the rightmost end of measurement are not significant.
- In some cases, a number may have an infinite number of significant figures.
The given measurement is
According to rule 3, the significant figure is 2.
c)
Interpretation : The number of significant figures in the given measurement is to be determined.
Concept Introduction : The known digits plus the last, estimated digit make up the significant figures in a measurement.
c)
Answer to Problem 5SP
The number of significant figures is 4.
Explanation of Solution
The known digits plus the last, estimated digit make up the significant figures in a measurement.
There is a set of rules to detect the digits in a significant measured value. The rules are as follows:
- It is assumed that every nonzero digit in a given measurement is significant.
- Zeros that come in between nonzero numbers are significant.
- The leftmost zeros that exist before nonzero digits are not significant.
- A zero following a decimal point and to the right of it are both always significant.
- Zeros that are to the left of an understandable decimal point at the rightmost end of measurement are not significant.
- In some cases, a number may have an infinite number of significant figures.
The given measurement is
According to rule 4, the significant figure is 4.
d)
Interpretation : The number of significant figures in the given measurement is to be determined.
Concept Introduction : The known digits plus the last, estimated digit make up the significant figures in a measurement.
d)
Answer to Problem 5SP
The number of significant figures is 4.
Explanation of Solution
The known digits plus the last, estimated digit make up the significant figures in a measurement.
There is a set of rules to detect the digits in a significant measured value. The rules are as follows:
- It is assumed that every nonzero digit in a given measurement is significant.
- Zeros that come in between nonzero numbers are significant.
- The leftmost zeros that exist before nonzero digits are not significant.
- A zero following a decimal point and to the right of it are both always significant.
- Zeros that are to the left of an understandable decimal point at the rightmost end of measurement are not significant.
- In some cases, a number may have an infinite number of significant figures.
The given measurement is
According to rule 2, the significant figure is 4.
Chapter 3 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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