Chapter 1, Problem 1.79QP

(a)

Interpretation Introduction

Interpretation:

The given calculation has to be performed and the answer has to be reported in proper number of significant figures.

  $\text{(23)(657)}$

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

The sum of the significant digits has to be given in the lowest decimal present in the values.

The significant digit in multiplication and division has to be given as the quantity with the fewest significant figures.

(b)

Interpretation Introduction

Interpretation:

The given calculation has to be performed and the answer has to be reported in proper number of significant figures.

  $\text{0}\text{.00521}\text{+}\text{0}\text{.236}$

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The given calculation has to be performed and the answer has to be reported in proper number of significant figures.

  $\frac{\text{18}\text{.3}}{\text{3}\text{.0576}}$

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The given calculation has to be performed and the answer has to be reported in proper number of significant figures.

  $\text{1157}\text{.23}\text{-}\text{17}\text{.812}$

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The given calculation has to be performed and the answer has to be reported in proper number of significant figures.

  $\frac{\text{(1}\text{.987)(298)}}{\text{0}\text{.0821}}$

Concept Introduction:

Refer to part (a).