(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.

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Answer 1

Question

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

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.

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Students have asked these similar questions

Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following: (a) match structures of isomers given their mass spectra below (spectra A and spectra B) (b) Draw the fragments given the following prominent peaks from each spectrum: Spectra A m/2 =43 and 1/2-57 spectra B m/2 = 43 (c) why is 1/2=57 peak in spectrum A more intense compared to the same peak in spectrum B. Relative abundance Relative abundance 100 A 50 29 29 0 10 -0 -0 100 B 50 720 30 41 43 57 71 4-0 40 50 60 70 m/z 43 57 8-0 m/z = 86 M 90 100 71 m/z = 86 M -O 0 10 20 30 40 50 60 70 80 -88 m/z 90 100

Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained. Draw the structures of these fragments.

For each reaction shown below follow the curved arrows to complete each equationby showing the structure of the products. Identify the acid, the base, the conjugated acid andconjugated base. Consutl the pKa table and choose the direciton theequilibrium goes. However show the curved arrows. Please explain if possible.

Answer 2

Question

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

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.

Expert Solution & Answer

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See solution

Answer 3

Question

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

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.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

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.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

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.

Answer 6

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

Answer 7

Chapter 2, Problem 138AP

Interpretation Introduction

(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.

Answer 8

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.

Answer 9

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.

Answer 10

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.

Answer 11

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.

Answer 12

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.

Answer 13

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.

Answer 14

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Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

Ch. 2.1 - Exercise 2.1 Write the numbers 357 and 0.0055 in...Ch. 2.2 - What if you were not allowed to use units for one...Ch. 2.5 - Exercise 2.2 Give the number of significant...Ch. 2.5 - Exercise 2.3 Give the answer for each calculation...Ch. 2.6 - Exercise 2.4 Wine is often bottled in 0.750-L...Ch. 2.6 - Exercise 2.5 Racing cars at the Indianapolis Motor...Ch. 2.7 - Exercise 2.6 Which temperature is colder, 172 K or...Ch. 2.7 - Exercise 2.7 Hot tubs are often maintained at 41...Ch. 2.7 - Exercise 2.8 An antifreeze solution in a car’s...Ch. 2.8 - Exercise 2.9A student wants to identify the main...

Solution Summary: The author explains that the number of significant digits in the answer should be determined by evaluating the given expression.

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