Chapter 1.5, Problem 1.9Q

(a)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{7}\text{.26}$ has to be given.

Concept Introduction:

Significant digits:

In a number, the digits which contribute to the precision of the number are said to be significant digits.

Rules for determination of significant digits in a number:

• All non-zero digits are significant.
• The zero’s appearing between two non-zero digits are significant.
• The zero’s before the non-zero numbers are not significant.
• Zero’s after non-zero number without decimal are non-significant.
• Zero’s after non-zero number with decimal are significant.
• Zero’s after the decimal point are significant.
• Any numbers with scientific notation are significant.

(b)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{726}$ has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{700}\text{.2}$ has to be given.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{7}\text{.0}$ has to be given.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{0}\text{.0720}$ has to be given.

Concept Introduction:

Refer to part (a).

(f)

Interpretation Introduction

Interpretation:

The number of significant figures that are present in the number $\text{720}$ has to be given.

Concept Introduction:

Refer to part (a).