Concept explainers
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(a)
Interpretation: The answer to the correct number of significant digits to be calculated.
Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.
(a)
Answer to Problem 32A
Significant digit is 52.36
Explanation of Solution
In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.
The given digits are
Calculations of these digits are as follows:
0.81 has two decimal places. Thus after decimal point the answer should be reported to two digits 52.36
(b)
Interpretation: The answer to the correct number of significant digits to be calculated.
Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.
(b)
Answer to Problem 32A
Significant digit is 10.90
Explanation of Solution
In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.
The given digits are
Calculations of these digits are as follows:
2.21 has two decimal places. Thus after decimal point the answer should be reported to two digits 10.90
(c)
Interpretation: The answer to the correct number of significant digits to be calculated.
Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.
(c)
Answer to Problem 32A
Significant digit is 5.25
Explanation of Solution
In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.
The given digits are
Calculations of these digits are as follows:
4.14 has two decimal places. Thus after decimal point the answer should be reported to two digits 5.25
(d)
Interpretation: The answer to the correct number of significant digits to be calculated.
Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.
(d)
Answer to Problem 32A
Significant digit is 6.5
Explanation of Solution
In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.
The given digits are
Calculations of these digits are as follows:
3.1 has one decimal places. Thus after decimal point the answer should be reported to one digit 6.5
Chapter 5 Solutions
World of Chemistry, 3rd edition
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- Show the mechanism steps to obtain the lowerenergy intermediate: *see imagearrow_forwardSoap is made by the previous reaction *see image. The main difference between one soap and another soap isthe length (number of carbons) of the carboxylic acid. However, if a soap irritates your skin, they mostlikely used too much lye.Detergents have the same chemical structure as soaps except for the functional group. Detergentshave sulfate (R-SO4H) and phosphate (R-PO4H2) functional groups. Draw the above carboxylic acidcarbon chain but as the two variants of detergents. *see imagearrow_forwardWhat are the reactions or reagents used? *see imagearrow_forward
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