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Concept explainers
(a)
Interpretation:
The given measured digit to three significant figures should be rounded off.
56.855 m
Concept Introduction:
To round off any number we have to follow some rules.
In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.
(b)
Interpretation:
We have to round off the given measured digit to three significant figures.
Concept Introduction:
To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.
(c)
Interpretation:
We have to round off the given measured digit to three significant figures.
Concept Introduction:
To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.
(d)
Interpretation:
We have to round off the given measured digit to three significant figures.
Concept Introduction:
To round off any number we have to follow some rules. In a number ended with 5, 6, 7, 8, or 9 must be rounded to next nearest 0 digit number. In a number followed by 0, 1, 2, 3, or 4 must be rounded the number down. If we have decimals; in rounding off numbers we have to keep the last figure unchanged and the first figure dropped is less than 5 whereas more than 5 will change the number to the next number.
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Chapter 2 Solutions
EBK BASIC CHEMISTRY
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