The number of significant figures should be rounded off as indicated by parentheses. Concept Introduction: Significant figures: The total number of digits that are recorded for a measurement is named as measurements of number of significant figures. Rules for significant figures: 1) Zero present in the middle of number are always significant Example: The number of significant figures in 4 .803 cm is four. 2) Zero present at the starting of a number are non-significant, they act to find the decimal point. Example: The number of significant figures in 0 .0061g is three. 3) Zero present at the end of the number and after a decimal point are significant. Example: The number of significant figures in 55 .220 K is five. 4) Zero present at the end of the number and before a decimal point are non-significant. Example: The number of significant figures in 34,200 m may be three, four or five. Rounding off the significant figures: 1) If the first digit is less than five, round down by dropping it and all succeeding digits 2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

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Answer 1

Question

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

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Answer 2

Question

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

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Answer 3

Question

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

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Answer 4

Question

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

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Answer 5

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 6

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 7

Chapter 0.10, Problem 0.11P

(a)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The number of significant figures should be rounded off as indicated by parentheses.

Concept Introduction:

Significant figures:

The total number of digits that are recorded for a measurement is named as measurements of number of significant figures.

Rules for significant figures:

1) Zero present in the middle of number are always significant
Example: The number of significant figures in 4.803 cm is four.

2) Zero present at the starting of a number are non-significant, they act to find the decimal point.
Example: The number of significant figures in 0.0061g is three.

3) Zero present at the end of the number and after a decimal point are significant.
Example: The number of significant figures in 55.220 K is five.

4) Zero present at the end of the number and before a decimal point are non-significant.
Example: The number of significant figures in 34,200 m may be three, four or five.

Rounding off the significant figures:

1) If the first digit is less than five, round down by dropping it and all succeeding digits

2) If the first digit is greater than or equal to five, remove five and add one to the digit on the left.

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

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Solution Summary: The author explains that the number of significant figures should be rounded off as indicated by parentheses.

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