(a) Interpretation: The given number should be rounded off to three significant digits. 0.00042557 Concept Introduction: Rules for rounding off numbers are as follows: If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up. For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down. For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
(a) Interpretation: The given number should be rounded off to three significant digits. 0.00042557 Concept Introduction: Rules for rounding off numbers are as follows: If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up. For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down. For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Solution Summary: The author explains that the given number should be rounded off to three significant digits.
The given number should be rounded off to three significant digits.
0.00042557
Concept Introduction:
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Interpretation Introduction
(b)
Interpretation:
The given number should be rounded off to three significant digits.
4.0235×10−5
Concept Introduction:
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Interpretation Introduction
(c)
Interpretation:
The given number should be rounded off to three significant digits.
5, 991, 556
Concept Introduction:
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Interpretation Introduction
(d)
Interpretation:
The given number should be rounded off to three significant digits.
399.85
Concept Introduction:
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Interpretation Introduction
(d)
Interpretation:
The given number should be rounded off to three significant digits.
0.0059998
Concept Introduction:
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
Choose the option that is decreasing from biggest to smallest.
Group of answer choices:
100 m, 10000 mm, 100 cm, 100000 um, 10000000 nm
10000000 nm, 100000 um, 100 cm, 10000 mm, 100 m
10000000 nm, 100000 um, 10000 mm, 100 cm, 100 m
100 m, 100 cm, 10000 mm, 100000 um, 10000000 nm
Q1. (a) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH3. Use
curved arrows to show the electron movement.
(b) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH4*. Use
curved arrows to show the electron movement.
Which is NOT the typical size of a bacteria?
1000 nm
0.001 mm
0.01 mm
1 um
Chapter 2 Solutions
Introductory Chemistry: Foundation - Text (Looseleaf)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell