(a) Interpretation: The number 1.2735 should be rounded off to two significant figures. Concept Introduction: Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows: Non-zero digits are considered as significant figures. (1 to 9) Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.) Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.) On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.) On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.) The rules for rounding off numbers are as follows: If the figure after the decimal is less than 5, then the digit remains unchanged. If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place. If the figure after the decimal is even, then the digit remains unchanged. If the figure after the decimal is odd, then 1 is added to the tenths place.

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Answer 1

Question

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

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apress your answer using three significant figures. Enter your answers numerically separated by commas, ANSWER: MC,H10 MCO2,MH2O = %3D Part B Complete the second row. Express your answer using three significant figures. Enter your answers numerically separated by commas. ANSWER: mo2 mco2,MH, O = %3D Part C Complete the third row. Express your answer using four significant figures. Enter your answers numerically separated by commas. ANSWER: mC,H10 MO2MH20 : %3D Part D Complete the fourth row. Express your answer using three significant figures. Enter your answers numerically separated by commas. ANSWER: %3D mC,H10 ,mo2,mCO2 Part E Complete the fifth row. Express your answer using three significant figures. Enter your answers numerically separated by commas. ANSWER: mg mo2,mcO2 mH,O = Part F Complete the sixth row. Express your answer using three significant figures. Enter your answers numerically separated by commas.

if a measurement is taken every 0.00005s, how many measurements occur in 1s?

MISSED THIS? Watch KCV 15.8, IWE 15.9, 15.12; Read Section 15.8. You can click on the Review link to access the section in your eText. Consider the following reaction: A(g) = B(g) + C(g) Find the equilibrium concentrations of A, B, and C for each of the following different values of Kc. Assume that the initial concentration of A in each case is 1.0 M and that the reaction mixture initially contains no products. Make any appropriate simplifying assumptions. Part A Kc = 2.0 Express your answer using two significant figures. Enter your answers numerically separated by commas. View Available Hint(s) [A], [B], [C] = {ΠΙ ΑΣΦ Submit Previous Answers ? M

Answer 2

Question

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

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Answer 3

Question

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

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Answer 4

Question

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

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Answer 5

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 6

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 7

Chapter 1.5, Problem 1.13P

Interpretation Introduction

(a)

Interpretation:

The number 1.2735 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The number 0.00253622 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The number 3,836.9 should be rounded off to two significant figures.

Concept Introduction:

Significant figures are used to express the degree of accuracy of an answer. The rules for identifying significant figures are as follows:

Non-zero digits are considered as significant figures. (1 to 9)
Zeros between non-zero digits are considered as significant figures. (for example, 2008 has four significant figures.)
Zeros that are left to the decimal are not considered as significant figures. (for example, 0000.28 has two significant figures.)
On the right side of the decimal place, zeros between decimal and non-zero digits are not considered as significant figures. (for example, 0.0028 has two significant figures.)
On the right side of the decimal place, zeros after the non-zero digits are considered as significant figures. (0.28000 has five significant figures.)

The rules for rounding off numbers are as follows:

If the figure after the decimal is less than 5, then the digit remains unchanged.

If the figure after the decimal is greater than 5 or equal to 5, then 1 is added to the tenths place.

If the figure after the decimal is even, then the digit remains unchanged.

If the figure after the decimal is odd, then 1 is added to the tenths place.

Answer 12

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Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

Ch. 1.1 - Prob. 1.1P Ch. 1.2 - Characterize each process as a physical change or...Ch. 1.2 - Does the molecular art represent a chemical change...Ch. 1.3 - Classify each example of molecular art as a pure...Ch. 1.3 - Classify each item as a pure substance or a...Ch. 1.3 - Classify each item as an element or a compound:...Ch. 1.4 - What term is used for each of the following units:...Ch. 1.4 - If a nanometer is one-billionth of a meter...Ch. 1.4 - Prob. 1.9P Ch. 1.4 - Using the prefixes in Table 1.2, determine which...

Solution Summary: The author explains that significant figures are used to express the degree of accuracy of an answer.

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