Concept explainers
(a)
Interpretation:
The number 25,401 needs to be rounded off up to 4 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
(b)
Interpretation:
The number 1,248,486 needs to be rounded off up to 4 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
(c)
The number 0.001265982 needs to be rounded off up to 4 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
(d)
Interpretation:
The number 0.123456 needs to be rounded off up to 3 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
(e)
Interpretation:
The number 195.371 needs to be rounded off up to 3 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
(f)
Interpretation:
The number 196.814 needs to be rounded off up to 3 significant figures.
Concept Introduction:
The rules to determine the significant figures in a number are as follows:
- Digits which are non-zero are always significant.
- Between two significant digits, if there is any non-zero digit present then it is significant.
- The trailing zeroes or final zero within the decimal portion are only significant.
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CONNECT IA GENERAL ORGANIC&BIO CHEMISTRY
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