(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.
Macmillan Learning
Draw the acyl chloride that would give the ketone shown using the Friedel-Crafts acylation reaction.
Select
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с H о
Cl
2Q
Erase
AICI₂
Draw the complete mechanism for this reaction:
.OH
مدید
OH
H2SO4
+ H₂O
To save you some time, the starting material has been copied into the first drawing area. However, you will still need to add any other reactants or catalysts that
take part in the reaction.
ན ི..
OH
Add/Remove step
Х
ด
ك
Click and drag to start
drawing a structure.
9:27 AM Tue Mar 4
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Problem 64 of 15
#63%
Submit
Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product
structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s).
Be sure to account for all bond-breaking and bond-making steps.
0:0
0:0
:0:
N.
:0:
:O
:0:
H
H.
:0:
Select to Add Arrows
O
:0:
H
O
:0:
0:0.
S.
H
Select to Add Arrows
S
:0:
:0:
H
H
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