(a) Interpretation: The number of significant digits in the answer should be determined by evaluating the given expression. ( 149.2 + 0.034 + 2000.34 ) . Concept Introduction: During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy. Decimal place is the position of digit right to the decimal point. In division and multiplication, the calculated values are always rounded up to minimum number of significant figures. Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations. 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. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
(a) Interpretation: The number of significant digits in the answer should be determined by evaluating the given expression. ( 149.2 + 0.034 + 2000.34 ) . Concept Introduction: During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy. Decimal place is the position of digit right to the decimal point. In division and multiplication, the calculated values are always rounded up to minimum number of significant figures. Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations. 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. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Solution Summary: The author explains that the number of significant digits in the answer should be determined by evaluating the given expression.
The number of significant digits in the answer should be determined by evaluating the given expression.
(149.2+0.034+2000.34).
Concept Introduction:
During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.
Decimal place is the position of digit right to the decimal point.
In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.
Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.
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.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Interpretation Introduction
(b)
Interpretation:
The number of significant digits in the answer should be determined by evaluating the given expression.
(1.0322×103+4.34×103)
Concept Introduction:
During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.
Decimal place is the position of digit right to the decimal point.
In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.
Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.
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.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Interpretation Introduction
(c)
Interpretation:
The number of significant digits in the answer should be determined by evaluating the given expression.
4.03×10−2−2.044×10−3
Concept Introduction:
During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.
Decimal place is the position of digit right to the decimal point.
In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.
Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.
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.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Interpretation Introduction
(d)
Interpretation:
The number of significant digits in the answer should be determined by evaluating the given expression.
2.094×105−1.073×106
Concept Introduction:
During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.
Decimal place is the position of digit right to the decimal point.
In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.
Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.
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.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
My question is whether HI adds to both double bonds, and if it doesn't, why not?
Strain Energy for Alkanes
Interaction / Compound kJ/mol kcal/mol
H: H eclipsing
4.0
1.0
H: CH3 eclipsing
5.8
1.4
CH3 CH3 eclipsing
11.0
2.6
gauche butane
3.8
0.9
cyclopropane
115
27.5
cyclobutane
110
26.3
cyclopentane
26.0
6.2
cycloheptane
26.2
6.3
cyclooctane
40.5
9.7
(Calculate your answer to the nearest 0.1 energy unit, and be sure to specify units, kJ/mol or kcal/mol. The answer is case
sensitive.)
H.
H
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A certain half-reaction has a standard reduction potential Ered +1.26 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that
must provide at least 1.10 V of electrical power. The cell will operate under standard conditions.
Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell.
Is there a minimum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the minimum. Round your answer to 2
decimal places. If there is no lower
limit, check the "no" box..
Is there a maximum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the maximum. Round your answer to 2
decimal places. If there is no upper
limit, check the "no" box.
yes, there is a minimum.
1
red
Πν
no minimum
Oyes, there is a maximum.
0
E
red
Dv
By using the information in the ALEKS…
Chapter 2 Solutions
Introductory Chemistry: Foundation - Text (Looseleaf)
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